Stemory

Terms of Use

Last updated November 11, 2026

1. Agreement

These Terms are an agreement between you and ArtArray Company Limited (“ArtArray”, “we”, “us”). They cover the Stemory app on iOS, iPadOS, and Android and the website stemory.app (together, the “Service”). By using the Service you accept these Terms and our Privacy Policy. If you do not accept them, do not use the Service.

2. Who can use the Service

The Service is made for students in grades 6 to 12 and for anyone who wants to learn math and science. The app does not ask for your age. When the App Store or Google Play tells the app that a user is under 13, AI chat and photo solving are turned off, while lessons, practice, and plans stay the same, and the app does not store or send your age to our servers. If you are under 18, or under the age of majority where you live, a parent or guardian should read these Terms with you and accept them on your behalf. Section 6 of our Privacy Policy explains what the Service collects from children under 13.

3. The Service

The Service offers interactive animated lessons, practice, and an AI tutor for math and science. The app downloads lessons from our server using an anonymous device ID. Answers produced by the AI tutor are written by AI, not a person, and can contain mistakes. Check important work, and do not rely on the Service as your only source for exams, grades, or decisions. Use it to learn, and follow the rules of your school about homework and tests.

We may change, add, or remove lessons and features over time.

4. Subscriptions

  • Some features and higher daily limits require a paid subscription. Available plans and billing periods are shown in the app before you buy.
  • Purchases are processed by Apple (App Store) or Google (Google Play) and confirmed through RevenueCat. The app and ArtArray never receive your payment card or billing details.
  • A subscription renews automatically at the end of each billing period unless you cancel at least 24 hours before it ends. Your account is charged for the next period within 24 hours before the current one ends.
  • You can manage or cancel an App Store subscription in Settings › [your name] › Subscriptions on your Apple device, or a Google Play subscription in Google Play › Payments & subscriptions › Subscriptions. Deleting the app does not cancel a subscription.
  • If a free trial is offered, any unused part of it ends when you buy a subscription.
  • Apple and Google handle billing and refunds under their own policies. For App Store purchases, you can request a refund at reportaproblem.apple.com. For Google Play purchases, follow Google Play’s refund process.

If we change a subscription price, we will tell you in advance. The new price applies from your next billing period, and you can cancel before it starts.

5. Your content

You keep ownership of the photos, questions, and messages you send (“Your Content”). You give us a worldwide, non-exclusive, royalty-free license to process and transmit Your Content only to provide the Service. You are responsible for Your Content and confirm that you have the right to send it.

6. Acceptable use

Do not:

  • break the law or infringe the rights of others;
  • send content that is harmful, hateful, sexual, or that contains other people’s personal information without their permission;
  • copy, scrape, extract, download in bulk, decompile, disassemble, or reverse engineer the app, its lesson packs, animations, narration, or code;
  • bypass, disable, or remove any download limit, security measure, or watermark in the Service;
  • resell, redistribute, or republish our lessons or other content, or use them to train AI models, without our written permission;
  • use bots, scrapers, or automated scripts to access the Service.

7. Our content

The lessons, lesson packs, animations, narration, practice, design, and software of the Service belong to ArtArray or its licensors and are protected by law. We give you a personal, non-transferable license to use them in the app for your own learning. Teachers may show lessons to their students in class or in a live online session, and you may share short clips that keep the Stemory watermark intact. If you downloaded the app from the Apple App Store, this license lets you use the app on Apple-branded products that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions.

8. Links to other services

The Service may link to websites or services we do not control. We are not responsible for their content or practices.

9. Ending your use

You can stop using the Service at any time. We may suspend or end your access if you break these Terms or if we must do so by law. Sections 5 to 14 continue to apply after your use ends.

10. Disclaimer

The Service is provided “as is” and “as available”. To the extent the law allows, we disclaim all warranties, express or implied, including fitness for a particular purpose, accuracy, and non-infringement. We do not guarantee any particular learning outcome, grade, or test result from using the Service.

11. Limitation of liability

To the extent the law allows, ArtArray is not liable for indirect, incidental, special, consequential, or punitive damages, or for loss of data, profits, or goodwill. Our total liability for any claim about the Service is limited to the greater of the amount you paid us in the 12 months before the claim and USD 50. Some places do not allow these limits, so they may not apply to you.

12. Indemnity

You agree to defend and hold ArtArray harmless from claims that arise from Your Content or from your breach of these Terms, to the extent the law allows.

13. Governing law

These Terms are governed by the laws of the State of California, United States, without regard to its conflict of laws rules. This does not take away any protection the law of your country of residence gives you as a consumer.

14. App stores

If you downloaded the app from the Apple App Store, these Terms are between you and ArtArray, not Apple. Apple is not responsible for the app or its content, and has no obligation to provide maintenance or support for it. Apple is not responsible for addressing any claims by you or a third party relating to the app or your possession and use of it, including product liability claims, claims that the app fails to meet any legal or regulatory requirement, and claims under consumer protection, privacy, or similar laws. If a third party claims that the app or your possession and use of it infringes their intellectual property rights, ArtArray, not Apple, is responsible for the investigation, defense, settlement, and discharge of that claim. If the app fails to meet a warranty that applies, you may notify Apple, and Apple will refund the purchase price, if any; Apple has no other warranty obligation. Apple and its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you. You represent that you are not located in a country that is subject to a U.S. Government embargo or that the U.S. Government has designated as a “terrorist supporting” country, and that you are not listed on any U.S. Government list of prohibited or restricted parties. Apple’s Standard End User License Agreement also applies where these Terms do not cover a point. If you downloaded the app from Google Play, Google is not a party to these Terms and is not responsible for the app or its support, and the Google Play Terms of Service also apply.

15. Changes to these Terms

We may update these Terms, and we will update the “Last updated” date above when we do. If a change is significant, we will tell you in the app or on this page at least 30 days before it takes effect. If you keep using the Service after that, you accept the new Terms.

16. Contact

ArtArray Company Limited
169/8 Hàm Nghi, Nam Đông Hà Ward, Quảng Trị Province, Vietnam
Phone: +84 399 204 341
support@stemory.app