Effective date: 2026-06-07 Last updated: 2026-06-07

These Terms of Service ("Terms") govern your access to and use of the ZenDriver mobile application and any related services (collectively, the "App"). The App is provided by Evgenii Zhulkov, an independent developer operating under the trade name "ZenDriver" ("ZenDriver", "we", "us", or "our").

Please read these Terms carefully. By downloading, installing, or using the App you agree to be bound by them. If you do not agree, do not install or use the App.

1. The App

ZenDriver is a mobile application that uses your device's motion sensors and GPS to evaluate driving behavior. The App captures motion during driving sessions, computes a "carefulness" score on the basis of acceleration and steering patterns, and maintains a local history of past sessions for your review. Certain optional features (for example, cloud sync, premium analytics, or extended history) require an active subscription.

2. Eligibility

You must be at least 13 years old to use the App. By using the App you represent that you meet this age requirement, that you hold a valid driver's licence where required by law, and that you have the legal capacity to enter into these Terms. If you are under the age of majority in your jurisdiction, your parent or legal guardian must agree to these Terms on your behalf.

3. Safety Disclaimer — Important

ZenDriver is an informational tool. It is not a driver-assistance system, a safety device, or a substitute for attentive driving.

You acknowledge and agree that:

• You must never operate the App while the vehicle is in motion. Set up your session before you start driving, mount your device securely, and do not interact with the screen while driving.
• The App's scores, metrics, and feedback are estimates derived from sensor data and may be inaccurate, delayed, or unavailable. They must not be relied upon for safety-critical decisions.
• You remain solely responsible for safe operation of your vehicle and for compliance with all applicable traffic laws, including any local restrictions on the use of mobile devices while driving.
• ZenDriver does not provide emergency services, collision detection, or roadside assistance.

You use the App at your own risk.

4. Licence

Subject to your compliance with these Terms, we grant you a personal, limited, non-exclusive, non-transferable, revocable licence to install and use the App on devices that you own or control, for your personal, non-commercial use. All rights not expressly granted are reserved.

You may not: (a) copy, modify, translate, adapt, reverse engineer, decompile, or disassemble the App, except to the extent such restrictions are prohibited by applicable law; (b) rent, lease, sublicense, or sell the App; (c) remove or alter any proprietary notices; or (d) use the App in any way that violates law or the rights of others.

5. Subscriptions and In-App Purchases

Some App features ("Premium Features") are available only through a paid subscription. Subscriptions are sold through the Apple App Store or Google Play and are governed in part by their respective payment terms.

Billing. Payment will be charged to your Apple ID or Google account at confirmation of purchase. Prices, plan names, and free-trial terms shown inside the App apply at the time of purchase.

Auto-renewal. Subscriptions renew automatically at the end of each billing period at the then-current price for the selected plan, unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period.

Managing and cancelling. You can manage and cancel your subscription in your device's account settings (iOS: Settings → Apple ID → Subscriptions; Android: Google Play → Subscriptions). Uninstalling the App does not cancel your subscription.

Free trials. Where a free trial is offered, any unused portion of the trial period is forfeited when you purchase a subscription, where required by local law.

Refunds. All purchases are processed by the App Store or Google Play. Refund requests are handled according to those platforms' policies and are not under our control. Where local consumer-protection law grants you additional refund or withdrawal rights, those rights are not affected by this section.

6. Your Account and Data

The App is designed to be usable without you creating an account or providing personal contact information. You are responsible for safeguarding your device and for any activity that occurs through it. If cloud sync is enabled, you are also responsible for ensuring that your device retains access to the App so that synced data remains available to you.

Our handling of personal data is described in our Privacy Policy, which forms part of these Terms.

7. User Conduct

You agree not to use the App to:

• violate any law, regulation, or third-party right;
• attempt to gain unauthorised access to our systems or to any other user's data;
• interfere with the operation of the App or transmit malware, spam, or other harmful code;
• attempt to circumvent any access, security, or subscription controls; or
• use the App in any vehicle or context in which it is prohibited by law or by the vehicle operator.

8. Intellectual Property

The App, including its source code, design, text, graphics, logos, scoring algorithms, and other content, is owned by ZenDriver and protected by copyright, trademark, and other laws. Except for the limited licence granted in Section 4, nothing in these Terms transfers any intellectual-property rights to you.

Feedback you choose to send us about the App may be used by us without obligation or compensation.

9. Third-Party Services

The App integrates third-party platforms (for example, analytics, error reporting, cloud sync, payment processing, and map providers). Your use of those services is also subject to their respective terms and privacy policies. We are not responsible for third-party services or for content reached from links within the App.

10. Updates and Availability

We may update, modify, or discontinue the App or any of its features at any time, with or without notice. We are not liable to you or any third party for any such changes. Updates may be required for the App or specific features to continue working.

11. Disclaimers

To the maximum extent permitted by applicable law, the App is provided "AS IS" and "AS AVAILABLE", without warranty of any kind, whether express, implied, or statutory, including the implied warranties of merchantability, fitness for a particular purpose, non-infringement, and any warranties arising from course of dealing or usage of trade.

We do not warrant that the App will be uninterrupted, error-free, secure, or that scores, measurements, or other outputs will be accurate, complete, or current. No advice or information obtained through the App creates any warranty not expressly stated in these Terms.

Some jurisdictions do not allow the exclusion of certain warranties. To that extent, the above exclusions may not apply to you.

12. Limitation of Liability

To the maximum extent permitted by applicable law, in no event will ZenDriver or its developer be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, data, goodwill, or use, arising out of or in connection with the App or these Terms, whether based on warranty, contract, tort (including negligence), strict liability, or any other legal theory, even if advised of the possibility of such damages.

To the maximum extent permitted by applicable law, our aggregate liability for any claim arising out of or relating to the App or these Terms will not exceed the greater of (a) the amounts you paid to us for the App during the twelve (12) months preceding the event giving rise to the claim, or (b) USD 25.

Nothing in these Terms excludes or limits any liability that cannot be excluded or limited under applicable law (including, where applicable, liability for death or personal injury caused by negligence, fraud, or fraudulent misrepresentation, or any statutory rights that consumers cannot waive).

13. Indemnification

To the extent permitted by law, you agree to indemnify and hold harmless ZenDriver, its developer, and its affiliates from and against any claims, damages, liabilities, costs, and expenses (including reasonable legal fees) arising out of (a) your use of the App, (b) your breach of these Terms, or (c) your violation of any law or third-party right.

14. Termination

These Terms remain in effect while you use the App. We may suspend or terminate your access to the App at any time, with or without notice, if you breach these Terms or if we discontinue the App. You may stop using the App at any time by uninstalling it.

On termination, Sections 3, 8, 11, 12, 13, 16, and 17 will survive.

15. Apple App Store Additional Terms

The following applies if you obtained the App from the Apple App Store:

• These Terms are entered into between you and ZenDriver, not Apple. Apple is not responsible for the App or its content.
• The licence in Section 4 is limited to use of the App on Apple-branded products that you own or control, as permitted by the Usage Rules in the App Store Terms of Service.
• Apple has no obligation to provide maintenance or support for the App.
• In the event the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price for the App, if any. To the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App.
• ZenDriver, not Apple, is responsible for addressing any claims relating to the App or your use of it, including product-liability, regulatory, and consumer-protection claims.
• ZenDriver, not Apple, is responsible for the investigation, defence, settlement, and discharge of any third-party intellectual-property claim relating to the App.
• You represent that you are not located in a country subject to a U.S. Government embargo or designated as a "terrorist supporting" country, and that you are not on any U.S. Government list of prohibited or restricted parties.
• Apple and Apple's subsidiaries are third-party beneficiaries of these Terms and, upon your acceptance, will have the right to enforce them against you.

16. Governing Law and Disputes

These Terms are governed by the laws of [Jurisdiction], without regard to its conflict-of-law rules. The courts of [Jurisdiction] will have exclusive jurisdiction over any dispute arising out of or relating to these Terms or the App, except where applicable consumer-protection law grants you the right to bring proceedings in your country of residence.

If you are a consumer resident in the European Economic Area or the United Kingdom, this section does not deprive you of the protection of mandatory provisions of the law of your country of residence.

17. Changes to These Terms

We may update these Terms from time to time. When we do, we will revise the "Last updated" date above and, for material changes, provide reasonable in-App notice. Your continued use of the App after changes take effect constitutes acceptance of the updated Terms. If you do not agree, please stop using the App.

18. Miscellaneous

These Terms, together with the Privacy Policy, constitute the entire agreement between you and ZenDriver regarding the App. If any provision is held unenforceable, the remaining provisions will continue in full force. Our failure to enforce a provision is not a waiver of our right to do so later. You may not assign these Terms; we may assign them in connection with a merger, acquisition, or sale of assets.

19. Contact

Questions about these Terms can be sent to:

ZenDriver — Evgenii Zhulkov Email: support@zendriver.app