Last updated: March 8, 2026 · Effective: March 8, 2026
Please read these Terms of Service carefully before using Mathix. By installing, accessing, or using the App, you agree to be bound by these terms.
These Terms of Service ("Terms") constitute a legally binding agreement between you ("User," "you," or "your") and Kelthos ("Company," "we," "us," or "our") regarding your use of Mathix (the "App"), a Scientific Calculator application.
By downloading, installing, or using the App, you acknowledge that you have read, understood, and agree to be bound by these Terms and our Privacy Policy.
If you do not agree to these Terms, do not download, install, or use the App.
Mathix is a free utility application that provides scientific calculator functionality. The App:
There are no minimum age requirements to use Mathix. The App does not collect personal information from any user at any age. Parents and guardians may allow their children to use the App freely.
Subject to your compliance with these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to:
You may not:
The App, including its code, design, graphics, logos, icons, and the name "Mathix" and "Kelthos," are the intellectual property of Kelthos and are protected by copyright, trademark, and other intellectual property laws.
Any data, text, settings, or content you create within the App ("Your Content") remains your property. We do not claim any ownership or rights over Your Content. Since Your Content is stored only on your device, you are solely responsible for backing it up.
The App includes open-source software components governed by their respective licenses. A list of third-party components and their licenses is available in the App's about/settings screen and in our Privacy Policy.
You are responsible for:
THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED.
To the fullest extent permitted by applicable law, Kelthos disclaims all warranties, express or implied, including but not limited to:
You acknowledge that Mathix is a utility tool and should not be relied upon as the sole basis for any critical decision-making. Always verify important results independently.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:
You agree to indemnify, defend, and hold harmless Kelthos, its officers, directors, employees, and agents from and against any and all claims, damages, losses, liabilities, costs, and expenses (including reasonable attorneys' fees) arising out of or related to:
We may, from time to time:
Updates may be delivered through the Google Play Store. While we aim to maintain backward compatibility, we cannot guarantee that all features will remain available in future versions. Continued use of the App after an update constitutes acceptance of any changes.
You may terminate this agreement at any time by uninstalling the App from your device. Uninstalling the App will permanently delete all locally stored data.
We reserve the right to:
Upon termination, all licenses granted herein immediately expire. Sections 5, 7, 8, 9, 13, and 14 shall survive termination.
The App uses certain third-party services as described in our Privacy Policy. Your use of these third-party services is subject to their respective terms:
We are not responsible for the practices, content, or terms of any third-party services.
These Terms shall be governed by and construed in accordance with the laws of the United States, without regard to conflict of law principles.
Any dispute, controversy, or claim arising out of or relating to these Terms or the App shall be resolved as follows:
You agree that any dispute resolution proceedings will be conducted only on an individual basis and not in a class, consolidated, or representative action.
These Terms, together with our Privacy Policy, constitute the entire agreement between you and Kelthos regarding the App.
If any provision of these Terms is found to be unenforceable, the remaining provisions shall remain in full force and effect.
Our failure to enforce any right or provision of these Terms shall not constitute a waiver of such right or provision.
You may not assign or transfer these Terms without our prior written consent. We may assign our rights and obligations under these Terms without restriction.
Kelthos shall not be liable for any failure to perform its obligations where such failure results from events beyond its reasonable control, including but not limited to natural disasters, wars, terrorism, riots, government actions, or internet disruptions.
We may revise these Terms from time to time. When we do:
If you have any questions about these Terms, please contact us: