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Terms of Use

Last updated: October 14, 2026

These terms set out the rules for using the Historo app on iOS and Android, including the Historo+ subscription. They form a contract between you and Sapraxis, the publisher of Historo. If you don't agree with them, please don't use Historo.

1. Who we are and what these terms cover

1.1 Publisher. Historo is published by Thomas Cianfarani EI, a sole proprietorship (micro-entreprise) trading as Sapraxis, registered in France under SIRET 840 161 319 00024, 16 Allée de la Colline, 83330 Le Beausset, France ("Sapraxis", "we", "us"). You can reach us at support@historo.app.

1.2 Scope. These terms apply to the Historo app, the services it gives access to and the Historo+ subscription (together, "Historo"). Our websites are covered by our legal notice.

1.3 Related documents. Our Privacy Policy explains how we handle your personal data. Purchases are also subject to the terms of the store you buy from: the Apple Media Services Terms and Conditions or the Google Play Terms of Service.

1.4 Acceptance. You accept these terms when you continue past the account screen while setting up Historo ("By continuing, you agree to the Terms of Use…"). You can read them again at any time in Settings → Legal information → Terms of use.

2. The Historo service

2.1 What Historo offers. Historo is an app for learning history with the help of artificial intelligence. Depending on whether you use it for free or with Historo+ (section 4), it includes:

• lessons on topics from our catalog or on topics you choose, each followed by a short quiz and often by a revision card you can save or share;
• chronicles: interactive stories set in a historical era, in which your choices shape the story;
• courses: step-by-step learning paths, including a weekly selection, community courses popular with other learners, and courses you create;
• an endless quiz, with hints;
• a chat with Historo, your AI guide, including questions about the lesson or chronicle you're reading;
• XP, levels, daily streaks and streak freezes, weekly challenges and weekly tournaments;
• if you allow them, notifications with a daily history topic and reminders.

2.2 Purpose. Historo is designed for discovering and revising history, for your personal education and enjoyment. It doesn't replace teachers, textbooks or academic sources, and it doesn't provide professional advice of any kind.

2.3 What you need. Historo runs on iPhone and iPad (App Store) and on Android phones and tablets (Google Play); the minimum system versions are shown on the store listings. Historo needs an internet connection: its content is generated and synced online, so the app doesn't work offline, and your mobile operator may charge you for data. Historo is available in twelve languages (English, French, German, Spanish, Italian, Brazilian Portuguese, Dutch, Polish, Swedish, Greek, Russian and Ukrainian), and its content is generated in the language you choose.

3. Your account

3.1 Age. Historo is intended for people aged 13 and over. If you're under the age of majority in your country, you need the permission of a parent or guardian to use Historo, and they should read these terms with you. A minor can only subscribe to Historo+ with the agreement of a parent or guardian, who can approve purchases with the store's family and parental controls.

3.2 Anonymous account. When you set up Historo and choose your username, we create an anonymous account for you: you don't need to give us your name or email address. Until you sign in with Google or Apple, this account is tied to the app on your device. If you uninstall Historo, reset or lose your device, you may lose access to the account and your progress, and we can't restore them.

3.3 Signing in. You can sign in with Google (iOS and Android) or Apple (iOS) at any time. Your account and progress are kept and become available on your other devices, on iOS and Android alike. These sign-in services are subject to their own terms.

3.4 Username and profile. Choose a username that isn't offensive, hateful, sexual or misleading, doesn't impersonate anyone and doesn't infringe anyone's rights. Your username, title and avatar are visible to other users in tournaments (section 12). Usernames are checked automatically, and we may refuse or reset one that breaks these rules.

3.5 Your account is personal. Don't share, sell or transfer your account, and keep your Google or Apple account secure. If you think someone else is using your account, tell us at support@historo.app.

3.6 Deleting your account. You can delete your account at any time in Settings → Privacy → Delete account (see also our data deletion page). Deletion is immediate and irreversible: your progress, XP, streaks and history are lost. Deleting your account or uninstalling the app does not cancel a Historo+ subscription, so cancel it in your store account as well (section 5.6).

4. Free use and Historo+

4.1 Free use. Historo is free to download and use, and it shows no ads. On the date of these terms, free use includes:

• a selection of lessons and chronicles in every category and era of our catalog;
• the endless quiz, with a daily allowance of hints;
• weekly tournaments, once you reach the required level;
• daily streaks, with a streak freeze each week;
• a daily allowance of messages with Historo, shared between the chat and questions about what you're reading;
• one course to follow in full, and previews of the others;
• access again to the lessons and chronicles you've completed.

Daily allowances reset at midnight in your time zone. The app shows what's included and what you have left.

4.2 Historo+. The Historo+ subscription unlocks all of Historo. On the date of these terms, it adds:

• every lesson and chronicle in the catalog;
• lessons on any history topic you choose;
• unlimited courses, including courses you create;
• unlimited messages with Historo;
• unlimited quiz hints and the option to skip questions;
• more streak freezes each week;
• the weekly course challenge and its XP bonus.

4.3 Fair use. "Unlimited" means there's no quota for normal personal use. To protect Historo from abuse and automated use, technical limits apply to every account, such as a maximum number of requests per minute; they don't affect normal use.

4.4 Changes. We may change what free use includes, for example the number of lessons, chronicles or messages available for free, to keep Historo sustainable. Changes that affect Historo+ follow section 14.

4.5 Free Historo+ access. If we give you Historo+ for free, for example during a promotion, it lasts for the period we indicate and isn't renewed unless we say otherwise.

5. Buying and managing Historo+

5.1 Plans and price. Historo+ is an auto-renewing subscription, available as a monthly or a yearly plan. There's currently no free trial. Prices vary by country: the price of each plan is shown in your currency, including applicable taxes, in the app before you confirm your purchase, and it's the price you pay.

5.2 Purchase. You subscribe in the app through the Apple App Store or Google Play, with your store account. The store handles the payment under its own terms and sends you a confirmation of your purchase; we never receive your payment card details. The subscription starts, and Historo+ is unlocked, as soon as the store confirms your payment. Our provider RevenueCat manages subscription status for us (see the Privacy Policy).

5.3 Automatic renewal. Your subscription renews automatically at the end of each period, for the same length (one month or one year) and at the then-current price, unless you cancel it at least 24 hours before the end of the current period. The store charges the renewal when the period ends (on the App Store, within the 24 hours before it ends).

5.4 Changing plans. You can switch between the monthly and yearly plans in your store account. When the change takes effect, and any price adjustment, follow the store's rules.

5.5 Using Historo+ on several devices. Historo+ is linked to your Historo account. To use it on another device, including one on another platform, sign in there with the same Google or Apple account. If you reinstall Historo with the same store account, you can also recover your subscription with Restore purchases on the subscription screen.

5.6 Cancelling. You can cancel at any time in your store account: on iPhone or iPad, in Settings → [your name] → Subscriptions or at apps.apple.com/account/subscriptions; on Android, in Google Play under Payments & subscriptions → Subscriptions or at play.google.com/store/account/subscriptions. In Historo, Settings → My subscription takes you there. Cancelling stops the next renewal: you keep Historo+ until the end of the period you've paid for, then Historo carries on in free mode, with your progress intact.

5.7 Refunds. Apple and Google process payments, so refunds are requested from them: at reportaproblem.apple.com for the App Store, and as explained in the Google Play Help Center. Apart from the cases provided for by law, in particular your right of withdrawal (section 6) and the legal guarantee of conformity (section 7), and from the stores' own refund policies, a subscription period that has started isn't refunded when you cancel.

5.8 Price changes. We may change the price of Historo+. For an existing subscription, a new price only applies from a renewal after you've been informed in advance, as the store's rules provide; where these rules require it, the store asks for your agreement. If you don't accept the new price, you can cancel your subscription before it applies.

5.9 Offers. We may offer free trials, introductory prices or promotional codes. Their conditions (who can get them, how long they last, the price afterwards) are shown before you confirm. Unless you cancel at least 24 hours before a free trial or introductory period ends, your subscription continues at the regular price.

5.10 Tacit renewal in France. Because Historo+ renews automatically, articles L. 215-1 to L. 215-3 and L. 241-3 of the French Consumer Code apply to consumers in France. They're reproduced in Annex 2.

6. Your right of withdrawal

6.1 14 days to change your mind. If you're a consumer living in the European Union, the European Economic Area or the United Kingdom, you can withdraw from your Historo+ subscription within 14 days of the day you subscribed, without giving a reason.

6.2 How to withdraw. As Apple and Google sell and bill the subscription, the quickest way is to ask your store for a refund within this period (section 5.7). You can also tell us that you're withdrawing, by email to support@historo.app, with the model form in Annex 1 or any other clear statement. We'll confirm receipt and make sure you're refunded: we can refund a Google Play purchase directly, while only Apple can refund an App Store purchase, so we'll help you with that request. Sending your request before the 14 days are up is enough to meet the deadline.

6.3 Refund. All payments received for the subscription are refunded within 14 days of your withdrawal, using the same means of payment and at no cost to you. If you expressly asked for Historo+ to start during the withdrawal period, the law allows an amount proportionate to the service provided until you withdrew to be deducted. Once you've withdrawn, Historo+ ends and Historo carries on in free mode.

7. Legal guarantee of conformity

7.1 Our commitment. We're responsible for supplying Historo as described in these terms and for providing the updates needed to keep it that way. If you're a consumer in the EU, you also benefit from the legal guarantee of conformity for digital services provided by the law of your country.

7.2 Reporting a problem. If Historo doesn't work as described, tell us with Report a problem in the app or at support@historo.app. We'll fix it free of charge and without undue delay.

7.3 Information for consumers in France. French law requires the following information to be given in a box. It is translated here; the French version of these terms contains the original text.

8. AI-generated content

8.1 Made with AI. Historo uses artificial intelligence, in particular OpenAI's language models, to write its lessons, chronicles, courses and quizzes and to answer your messages; some illustrations are also generated by AI. When you chat with Historo, you're talking to an AI, not a person.

8.2 AI can make mistakes. We guide the AI with strict rules for historical accuracy, but AI-generated content can still contain errors, inaccuracies, omissions, simplifications or outdated information. Before relying on Historo for something that matters, such as schoolwork, an exam or a publication, check the information against reliable sources.

8.3 Difficult history. History includes wars, violence, persecution and other painful events. Historo covers them for educational purposes. Describing a historical figure, regime or ideology doesn't mean endorsing it.

8.4 A shared library. A lesson, chronicle or course generated for a topic is stored in a shared library and may be shown to anyone who asks for the same topic in the same language; courses can also appear in the community list. This content is never linked to your name, and it isn't exclusive to you.

8.5 Topics we don't cover. The topics you type are checked automatically. We may refuse to generate content on a topic that isn't about history, is inappropriate or could lead to harmful or unlawful content, and Historo may decline some requests in the chat.

8.6 Reporting mistakes. If you spot a mistake or a problem in a lesson, chronicle, course, quiz or chat answer, tell us with Report a problem or at support@historo.app. We review every report, and we correct or remove content where needed.

9. What you can do with Historo's content

9.1 Our rights. We own, or hold licences for, Historo and its content: the app and its software, design, texts, lessons, chronicles, courses, quizzes, illustrations and library of generated content, the Historo name and logo, and the Historo mascot. Historo® is a registered trademark. These terms don't transfer any of these rights to you.

9.2 Your licence. We grant you a personal, non-exclusive and non-transferable licence to install and use Historo on devices you own or control, for your personal, non-commercial use, in accordance with these terms and the store's usage rules. This licence ends when these terms end.

9.3 Learning and sharing. You may use Historo's content (lessons, chronicles, quizzes, chat answers and revision cards) for your own learning, and share it with others for non-commercial purposes, for example by sending a revision card to a friend, posting it on social media or using it in a class you teach, provided you mention Historo as the source and don't alter it in a misleading way.

9.4 What requires our permission. Without our written permission, you may not:

• sell Historo's content or use it in a commercial product or service, publication, website, app or advertising;
• copy or extract content in bulk or systematically, by scraping or other automated means;
• use Historo's content to train or improve AI models, or to build a competing service;
• remove source or copyright notices from Historo's content.

To ask for permission, write to support@historo.app.

9.5 Third-party images. Some images come from Wikimedia Commons and other public sources. They remain subject to their own licences, and their source is shown in the app.

10. What you write in Historo

10.1 Your content. This means what you write or send in Historo: your username, the topics you type, your chat messages, and your reports and messages to us.

10.2 What you allow us to do. You keep your rights in your content. You grant us a free, non-exclusive, worldwide licence to host, store, reproduce, adapt and process it, only to: provide Historo (generate the content you ask for, answer your messages, show your username to other participants in tournaments); add the content generated from the topics you type to the shared library described in section 8.4, without any link to you; and handle your reports and messages and improve Historo. This licence lasts as long as your content is used for these purposes. It ends when you delete your content or your account, except for content already in the shared library and what we must keep by law. Your personal data is handled as described in our Privacy Policy.

10.3 Your responsibility. You must have the right to send your content, and it must comply with these terms and the law. Please don't include personal information, about yourself or anyone else, in your messages or topics.

10.4 Ideas. If you send us ideas or suggestions, we may use them freely to improve Historo, without any obligation to you.

11. Rules of use

When you use Historo, you agree not to:

• send or request content that is illegal, hateful, harassing, violent, sexually explicit or defamatory, or that glorifies crimes against humanity or terrorism;
• try to make the AI produce such content, get around its safeguards or reveal its instructions;
• cheat: manipulate your XP, streaks, rankings or rewards, use several accounts to gain an advantage, or take advantage of bugs (please report them instead);
• use bots, scripts or other automated means to access Historo, overload or disrupt our services, or get around the limits of free use, the subscription or our security measures;
• copy, modify, decompile or reverse-engineer the app, except where the law allows it;
• impersonate anyone or mislead others about who you are;
• sell, rent or share your account or your Historo+ access;
• use Historo in breach of the law or of anyone's rights.

If you break these rules, we may take the measures described in sections 13 and 15.

12. Tournaments, XP and rewards

12.1 Weekly tournaments. Once you reach the required level, you're placed in a weekly tournament with a group of other players, ranked by the XP earned during the week. The other participants can see your public profile: username, title, avatar, level and XP (including XP earned this week), streak, podiums, premium badge, completion statistics and the date you joined.

12.2 No monetary value. XP, levels, streaks, streak freezes, podiums, badges and other rewards are game features. They have no monetary value, can't be bought, sold, exchanged or converted into money, and can't be transferred to another account. Tournaments involve no prizes other than these in-app rewards.

12.3 Fair play. We may correct rankings, XP or rewards that result from an error, a bug or cheating, and exclude accounts that cheat from tournaments.

13. Moderation and reporting

13.1 How we moderate. Usernames and the topics you type are checked automatically before they're used, with the help of OpenAI's moderation tools, and Historo's AI is instructed to stay on history and decline inappropriate requests. Reports and complaints are reviewed by a person.

13.2 What we may do. If content or behaviour breaks these terms or the law, we may refuse a topic or a message, refuse or reset a username, remove content from the shared library, restrict features, or suspend or close an account (section 15). Our response depends on how serious the breach is and whether it's repeated.

13.3 Reporting illegal content. If you believe something in Historo is illegal, such as a username or a passage in a lesson, report it with Report a problem or at support@historo.app. Explain where it is and why you believe it's illegal, give your name and email address, and confirm that your report is accurate and made in good faith. We'll acknowledge it, review it promptly and tell you our decision.

13.4 Contesting a decision. If we restrict your content or your account, we'll tell you why and how to contest the decision, unless the law prevents it. You can contest it by replying to our message or writing to support@historo.app, and a person will review it. You can also go to court.

13.5 Point of contact. For the EU Digital Services Act, our single point of contact for users and authorities is support@historo.app. We answer in French and English.

14. Changes, updates and availability

14.1 Historo evolves. We may add, improve, change or remove features and content, including by rolling out changes gradually or testing them with some users. We do so for valid reasons, such as improving Historo, adapting it to how it's used, technical, security or legal requirements, changes made by our providers or the cost of running the service, and at no extra cost to you.

14.2 Changes that affect Historo+. If a change reduces your access to or use of Historo+ more than marginally, we'll inform you at least 30 days in advance, in the app or by email if we have your address, explaining what changes and when. You can then end your subscription free of charge within 30 days of that information or of the change, whichever is later, and we'll refund the part of the price corresponding to the remaining period.

14.3 Updates. We release app updates to fix problems, improve security and add features. Please install them: older versions may stop working. If you don't install an update that we've told you about, along with the consequences of not installing it, we're not responsible for a lack of conformity that this update alone would have fixed.

14.4 Availability. Historo relies on our servers and on providers such as Google (Firebase), OpenAI, Apple and Google Play. We do our best to keep it available, but we can't guarantee uninterrupted access: Historo or some of its features, especially AI generation, may be temporarily unavailable for maintenance, updates, provider outages, security reasons or events beyond our control. We announce planned interruptions when we can.

14.5 If Historo closes. If we decide to stop operating Historo, we'll tell you at least 30 days in advance, and Historo+ subscribers will be refunded for the part of their current period after the closure.

15. Suspension and termination

15.1 By you. You can stop using Historo whenever you like and delete your account at any time (section 3.6). To stop paying for Historo+, cancel your subscription in your store account (section 5.6).

15.2 By us. We may restrict features, or suspend or close your account, if you seriously or repeatedly break these terms (for example by cheating, abusing the service, sending illegal content, committing fraud or trying to compromise our security), or if the law or an authority requires it. Except in urgent cases, such as a security risk, illegal content or a legal obligation, we'll warn you first and give you a chance to respond. We'll tell you the reasons for our decision and how to contest it (section 13.4).

15.3 Refunds. If we close an account that has an active Historo+ subscription for a reason other than a breach of these terms on your part, we'll refund the remaining part of the period you've paid for.

15.4 After termination. The provisions that by their nature continue to apply after the end of the contract, such as sections 9, 10.2, 16 and 19, remain in force.

16. Liability

16.1 Our liability. We're responsible for providing Historo in accordance with these terms and the law. If we fail to, we're liable for the foreseeable damage directly caused by that failure, under the conditions set by applicable law.

16.2 Limits. We're not liable for damage that results from your own fault, including use of Historo in breach of these terms, from the unforeseeable and insurmountable act of a third party unrelated to Historo, or from force majeure.

16.3 Your rights are preserved. Nothing in these terms excludes or limits our liability for death or personal injury, fraud, gross negligence or wilful misconduct, or any other liability that can't be excluded or limited by law. Nothing in these terms affects your statutory rights as a consumer, including the legal guarantee of conformity.

16.4 Your liability. You're responsible, as provided by law, for any damage you cause to us or to others by breaching these terms.

17. Apple and Google

17.1 If you got Historo from the Apple App Store, you and we acknowledge and agree that:

1. these terms are concluded between you and Sapraxis only, not with Apple, and Sapraxis, not Apple, is solely responsible for Historo and its content;
2. your licence to use Historo is limited to Apple-branded products that you own or control, as permitted by the Usage Rules set out in the Apple Media Services Terms and Conditions, except that Historo may be accessed and used by other accounts associated with you via Family Sharing or volume purchasing;
3. Sapraxis is solely responsible for providing maintenance and support for Historo, as set out in these terms or as required by law, and Apple has no obligation whatsoever to furnish any maintenance or support services for Historo;
4. Sapraxis is solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. If Historo fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price of Historo to you; to the maximum extent permitted by law, Apple has no other warranty obligation whatsoever with respect to Historo, and any other claims, losses, liabilities, damages, costs or expenses attributable to any failure to conform to any warranty are Sapraxis's sole responsibility;
5. Sapraxis, not Apple, is responsible for addressing any claims by you or any third party relating to Historo or your possession and use of it, including (i) product liability claims; (ii) any claim that Historo fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer protection, privacy or similar legislation;
6. in the event of any third-party claim that Historo or your possession and use of it infringes that third party's intellectual property rights, Sapraxis, not Apple, is solely responsible for the investigation, defence, settlement and discharge of that claim;
7. you represent and warrant that you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist supporting" country, and that you are not listed on any U.S. Government list of prohibited or restricted parties;
8. you must comply with the applicable third-party terms of agreement when using Historo, such as your mobile data service agreement;
9. Apple and Apple's subsidiaries are third-party beneficiaries of these terms, and once you accept them, Apple will have the right (and will be deemed to have accepted the right) to enforce them against you as a third-party beneficiary.

Our name, address and contact details are given in section 21.

17.2 If you got Historo from Google Play, your purchases are also subject to the Google Play Terms of Service and policies, and Google isn't responsible for Historo or its content.

18. Changes to these terms

18.1 Updates. We may update these terms, for example to reflect changes to Historo, to the law or to our providers' requirements. The date at the top of this page shows when they last changed.

18.2 Notice. We'll inform you of significant changes in the app, or by email if we have your address, at least 30 days before they take effect, unless the law requires a change sooner. Changes don't apply retroactively.

18.3 If you disagree. If you don't accept the new terms, you can stop using Historo and delete your account before they take effect. If you have Historo+ and a significant change is to your disadvantage, you can also end your subscription, and we'll refund the part of the period you've paid for that remains after the change takes effect. If you keep using Historo after that date, the new terms apply to you.

19. Complaints, mediation and applicable law

19.1 Contact us first. If you have a problem with Historo, write to us at support@historo.app or use Contact us in the app's settings. We'll do our best to find a solution with you.

19.2 Consumer mediation. If you're a consumer and your written complaint hasn't been resolved, or we haven't replied within one month, you can refer the dispute free of charge to our consumer mediator:

Société Médiation Professionnelle
www.mediateur-consommation-smp.fr
Alteritae, 5 rue Salvaing, 12000 Rodez, France

You must first have tried to resolve the dispute with us through a written complaint, and you must contact the mediator within one year of that complaint. Mediation is optional: you remain free to go to court.

19.3 Applicable law. These terms are governed by French law. If you're a consumer living in another country, you also keep the protection of the mandatory provisions of the law of your country of residence.

19.4 Courts. If a dispute can't be resolved amicably, it may be brought before the courts that have jurisdiction under the law. If you're a consumer, you can bring proceedings before the courts of the place where you live or before the French courts, and we can only bring proceedings against you before the courts of the place where you live.

20. General provisions

20.1 Entire agreement. These terms, together with the documents they refer to and the conditions shown when you buy, form the entire agreement between you and Sapraxis about Historo.

20.2 Transfer. We may transfer this contract to another entity that takes over Historo, for example a company set up by Sapraxis, provided this doesn't reduce your rights under these terms; we'll inform you if we do. You may not transfer your rights or obligations under these terms.

20.3 Severability. If a provision of these terms is held invalid, the other provisions remain in force.

20.4 No waiver. If we don't enforce a provision, we don't waive our right to do so later.

20.5 Communications. We contact you in the app, or by email if we have your address.

20.6 Languages. These terms are available in English and French. If you live in France, the French version prevails in case of discrepancy; otherwise, the English version prevails.

21. Contact

Thomas Cianfarani EI (Sapraxis), micro-entreprise
16 Allée de la Colline, 83330 Le Beausset, France
SIRET 840 161 319 00024
Support: support@historo.app, or Settings → Contact us in the app
Phone: +33 7 67 02 32 73
Personal data: privacy@sapraxis.com

Annex 1. Model withdrawal form

Fill in and send this form only if you want to withdraw from your Historo+ subscription (section 6). You can also simply ask your store for a refund.

To help us find your subscription, you can add your Historo username, the store you used (App Store or Google Play) and, if you have it, the order number on your receipt.

Annex 2. Tacit renewal: articles of the French Consumer Code

As required by article L. 215-4 of the French Consumer Code, the articles below are reproduced in their original French. In short: for a fixed-term service contract that renews automatically, the provider must remind consumers in France in writing, one to three months before the deadline for refusing the renewal, that they can choose not to renew. If it doesn't, the consumer can end the contract free of charge at any time after the renewal, and advance payments made after the last renewal are refunded within 30 days, minus the amounts corresponding to the service provided until termination. A contract concluded online must also be possible to terminate online.