Mathonaut — Terms of Service

Last updated: 10 May 2026

These Terms of Service govern your use of Mathonaut, an application published by Bystronaut. By downloading or using the app, you agree to these terms.

1. Who we are

Mathonaut is developed and published by Bystronaut, a solo indie software studio. You can reach us at mathonaut.app@gmail.com.

2. The app

Mathonaut is a mental math trainer for mobile devices. It is available on the Apple App Store and Google Play. Features described in the app or its store listings are subject to change as we improve the product.

3. License to use

Bystronaut grants you a personal, non-exclusive, non-transferable, revocable license to use Mathonaut on devices you own or control, for your own non-commercial purposes, in accordance with these terms and the rules of the app store you downloaded it from.

4. Mathonaut Pro subscription

Mathonaut offers an optional paid subscription called Mathonaut Pro that unlocks additional content and features.

• Subscriptions are billed through the Apple App Store or Google Play. Prices are displayed before you subscribe.
• Your subscription renews automatically at the end of each billing period unless you cancel it at least 24 hours before renewal.
• To cancel, use the subscription management settings of your Apple ID or Google account.
• We do not process payments or store payment information. All billing is handled by the respective app store.
• Refunds are governed by Apple's or Google's refund policies. We cannot issue refunds directly.

5. Acceptable use

You agree not to:

• Reverse-engineer, decompile, or modify the app or its contents.
• Use the app in any way that violates applicable law or the terms of the app store from which you downloaded it.
• Attempt to extract, copy, or redistribute any intellectual property contained in the app.

6. Intellectual property

All content, design, graphics, and code in Mathonaut are the property of Bystronaut and are protected by applicable intellectual property laws. Nothing in these terms transfers any ownership rights to you.

7. No warranty

Mathonaut is provided "as is" without warranty of any kind. Bystronaut makes no guarantees that the app will be error-free, uninterrupted, or suitable for any particular purpose. Your use of the app is at your own risk.

8. Limitation of liability

To the fullest extent permitted by law, Bystronaut shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of your use of — or inability to use — Mathonaut. In any case, our total liability to you shall not exceed the amount you paid for Mathonaut Pro in the twelve months preceding the claim.

9. Children

Mathonaut is suitable for all ages. We do not knowingly collect personal information from anyone, including children. See our Privacy Policy for details.

10. Changes to these terms

We may update these terms from time to time. We will revise the date at the top of this page when we do. Continued use of the app after changes constitutes acceptance of the updated terms.

11. Governing law

These terms are governed by the laws of the jurisdiction in which Bystronaut is registered, without regard to conflict-of-law rules. Any disputes shall be resolved in the competent courts of that jurisdiction.

Contact

Questions about these terms? Email mathonaut.app@gmail.com.