Terms of Use

Last updated: 6 July 2026

These Terms of Use ("Terms") govern your use of the RomanT Apps family of Android apps — Art of Negotiation, Charisma & Leadership Guide, Testosterone & Vitality, Manipulation & Control, The Technique of Lying, and Save Money Challenge (each an "App") — published by independent developer Roman Tsisyk. By downloading, installing, or using any App, you agree to these Terms.

Acceptance of terms

If you do not agree with these Terms, please do not use the Apps. We may update these Terms occasionally, as described below; continuing to use an App after an update means you accept the revised Terms.

License to use

Each App is free to download and use. We grant you a limited, non-exclusive, non-transferable, revocable license to install and use the App for your own personal, non-commercial use, on devices you own or control. You may not resell, sublicense, redistribute, or use the App or its content for any commercial purpose without our prior written permission.

Intellectual property

All book content, chapter text, quizzes, illustrations, and app design are © Roman Tsisyk, unless otherwise credited, and are protected by copyright and other intellectual property laws. App names, logos, and any Google Play branding shown remain the property of their respective owners — including Google Play and the Google Play logo, which are trademarks of Google LLC. Nothing in these Terms transfers any ownership rights to you.

Educational content — not professional advice

The self-development, psychology, health, and finance content in the Apps is provided for general informational and educational purposes only. It is not a substitute for professional medical, legal, financial, or psychological advice, diagnosis, or treatment. In particular, Testosterone & Vitality is not medical advice — always consult a qualified physician or other health professional before making changes related to your health, supplements, hormones, or fitness routine, and before disregarding professional medical advice because of something you read in the app. Similarly, content about money, negotiation, or interpersonal conflict reflects general educational perspectives, not personalized professional guidance.

"As is" — no warranty

The Apps are provided "as is" and "as available," without warranties of any kind, whether express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, accuracy, or non-infringement. We do not guarantee that the Apps will be error-free, uninterrupted, or that outcomes described in the content (such as habit or skill improvements) will apply to you.

Limitation of liability

To the maximum extent permitted by law, Roman Tsisyk shall not be liable for any indirect, incidental, special, consequential, or punitive damages, or any loss of data, opportunity, or goodwill, arising from your use of, or inability to use, any App — even if advised of the possibility of such damages. Your sole remedy for dissatisfaction with an App is to stop using it and uninstall it.

Third-party services

The Apps rely on third-party services — including Google Play (distribution, in-app review) and Google AdMob (advertising) — which operate under their own terms and privacy policies. We are not responsible for the availability, content, or practices of these third-party services. See our Privacy Policy for more on how advertising works within the Apps.

Changes to these terms

We may revise these Terms from time to time to reflect changes to the Apps or applicable law. The "Last updated" date at the top of this page reflects the most recent revision. Material changes will be reflected here; continued use of an App after a revision constitutes acceptance of the updated Terms.

Contact

Questions about these Terms can be sent through the developer contact link on any app's Google Play Store listing, or via roman-tsisyk.com.