Last updated: December 29, 2025
By downloading, installing, or using Number10 (the "App"), you agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the App.
Number10 is a puzzle game where players combine four numbers using mathematical operations to make 10. The App includes:
The App is suitable for users of all ages. Users under the age of 18 should review these terms with a parent or guardian.
The App offers the following in-app purchases:
All purchases are final and non-refundable, except as required by applicable law or Apple's refund policies. Purchases are processed through Apple's App Store and are subject to Apple's terms and conditions.
If you reinstall the App or switch devices, you can restore your previous purchases at no additional cost using the "Restore Purchases" feature in the App settings.
All content, features, and functionality of the App, including but not limited to text, graphics, logos, and software, are owned by us and are protected by copyright, trademark, and other intellectual property laws.
You agree not to:
If you use Game Center features, you must comply with Apple's Game Center terms of service. Your Game Center display name and scores may be visible to other players on leaderboards.
The free version of the App displays advertisements provided by third-party advertising networks. These advertisements are subject to the privacy policies and terms of the respective advertising providers.
The App is provided "as is" and "as available" without warranties of any kind, either express or implied. We do not warrant that the App will be uninterrupted, error-free, or free of viruses or other harmful components.
To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of the App.
We reserve the right to modify these terms at any time. We will notify users of any material changes by updating the "Last updated" date. Your continued use of the App after such changes constitutes acceptance of the new terms.
We reserve the right to terminate or suspend your access to the App at any time, without notice, for conduct that we believe violates these terms or is harmful to other users or us.
These terms shall be governed by and construed in accordance with the laws of Japan, without regard to its conflict of law provisions.
If you have any questions about these Terms of Service, please contact us at: