Roundel Terms of Use

Last updated: 2026-08-11
Effective date: 2026-05-20
Version: 1.0

These Terms of Use ("Terms") form a binding agreement between you ("you", "User") and Yener Unsal governing your access to and use of Roundel BMW & MINI Diagnostics (the "App") and any related services we provide. By installing, accessing, or using the App you accept these Terms in full. If you do not accept them, do not install or use the App.

These Terms apply in addition to (i) the Apple Media Services Terms and the Apple App Store EULA where you obtain the App from the Apple App Store, (ii) the Google Play Terms of Service where you obtain it from Google Play, and (iii) any other distribution-channel terms of the platform from which you obtain the App. In the event of conflict, the platform's mandatory terms prevail to the extent required by that platform's policies.

1. Eligibility

• You must be at least 13 years old. In the European Economic Area, you must be at least 16 years old, or have your parent's or legal guardian's consent where the law of your country sets a lower age (Article 8 GDPR).
• You must have the legal capacity to enter into a binding contract in your jurisdiction.
• You represent and warrant that (i) you are not located in a country subject to a U.S. Government embargo, or designated by the U.S. Government as a "terrorist supporting" country, and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties (including OFAC SDN, EU sanctions, UK sanctions, or UN sanctions lists).

2. Not affiliated with BMW

Roundel is an independent third-party diagnostic tool. It is not affiliated with, endorsed by, sponsored by, or otherwise connected to Bayerische Motoren Werke AG ("BMW"), MINI, or any BMW Group brand, dealer, or authorized representative. "BMW", "MINI", "M", and related marks are trademarks of BMW AG used here solely to describe the vehicles with which the App is compatible (nominative fair use). All other trademarks (Apple, App Store, iPhone, Google, Google Play, Android, etc.) are the property of their respective owners.

3. License grant

Subject to your compliance with these Terms and the applicable platform's usage rules, we grant you a personal, non-exclusive, non-transferable, revocable, limited license to install and use one copy of the App on a device you own or control, solely for your personal, non-commercial use, or for commercial use as a professional automotive technician on vehicles you have been authorized to service by their owner.

You may not:

• Sublicense, sell, rent, lease, or commercially redistribute the App
• Reverse-engineer, decompile, or disassemble the App, or attempt to derive its source code, except to the extent applicable mandatory law expressly allows (e.g., Article 6 of EU Directive 2009/24/EC for interoperability)
• Remove, alter, or obscure copyright, trademark, or other proprietary notices
• Use the App in any way that violates applicable law, infringes third-party rights, or breaches these Terms
• Use the App on a vehicle you do not own and for which you have not been given the owner's authorization
• Use the App to defeat, disable, or otherwise interfere with emissions control devices, safety systems, or anti-theft systems in violation of applicable law
• Build a competing diagnostic application by copying the App, its assets, diagnostic profiles, or its protocol implementation

4. Use at your own risk — safety

Roundel sends commands to your vehicle's on-board diagnostic system via an OBD-II / D-CAN / ENET adapter. These commands may:

• Change vehicle behaviour (exhaust flap position, Active Sound Design level, service-mode parking-brake release, transmission programme reset)
• Clear stored diagnostic trouble codes (DTCs) from ECU memory
• Trigger ECU extended diagnostic sessions, security access, and routine control identifiers
• Reset adaptation values or service indicators

Incorrect usage may cause:

• Temporary loss of ECU functionality until the vehicle is restarted
• Warning lights on the instrument cluster
• Loss of comfort or convenience features until reprogrammed by a dealer
• Rare, chassis-specific edge cases we have not yet encountered during testing

Driving prohibition. Do not operate the App while driving. Use only with the vehicle stationary, the parking brake applied, the transmission in Park (automatic) or neutral with brake applied (manual), and where required by the operation, in a safe service environment.

Workshop safety. Do not perform any operation that releases the parking brake, disengages a safety interlock, or alters a chassis subsystem while a person is under the vehicle, while the vehicle is on a lift in a position that could cause it to fall, or while bystanders are within range of any moving component.

Confirmation prompts. Some operations display a safety prompt before execution. Read those prompts carefully and only confirm if you understand the consequences.

You use Roundel at your own risk. To the maximum extent permitted by law, we do not accept liability for any damage, malfunction, warranty voidance, or legal consequence resulting from your use of the App on any vehicle.

5. Vehicle warranty

Using a third-party diagnostic tool on a vehicle under manufacturer warranty may affect that warranty in some jurisdictions. In the United States, the Magnuson–Moss Warranty Act (15 U.S.C. § 2302(c)) limits a manufacturer's ability to condition warranty on the use of branded parts or service, but does not protect against damage you cause. In the European Union, EU Regulation 2018/858 and Block Exemption Regulation 461/2010 protect your right to use independent service providers, subject to those rules. Consult your warranty agreement, your authorized dealer, or qualified counsel before using Roundel on a warranted vehicle.

6. Emissions and regulatory compliance

• United States. The U.S. Clean Air Act and EPA regulations (40 C.F.R. Parts 85, 86, and 1037) prohibit tampering with vehicle emissions controls.
• European Union / EEA. Regulation (EU) 2018/858 and the Euro 6/7 emission framework regulate vehicle emissions and modifications.
• Other jurisdictions. Equivalent regulations apply in the United Kingdom, Türkiye, Canada, Australia, and elsewhere.

You must not use the App to defeat, disable, or render inoperative any emissions control device, on-board diagnostic monitoring system, or pollution control system in violation of applicable law. Clearing DTCs solely to mask an emissions issue prior to inspection may constitute tampering. Compliance is your responsibility.

7. In-app purchases

• Roundel offers a one-time premium unlock ("Roundel Premium") and may offer subscriptions in the future. Pricing, contents, and applicable taxes are shown at the point of sale within the App, in your local currency where available, in compliance with EU Directive 2011/83 and equivalent consumer-disclosure laws.
• Payment is processed exclusively via:
• Apple App Store In-App Purchase on iOS
• Google Play Billing on Android
• The default billing system of any other store from which you obtain the App, where required by that store's developer program policy.
• Refunds. Refund requests are handled by the relevant store under its standard refund process. We do not process refunds directly.
• Apple: https://reportaproblem.apple.com
• Google: https://play.google.com/store/account
• EU / UK statutory withdrawal right. Under Directive (EU) 2011/83 you have a 14-day right to withdraw from the purchase of digital content. However, the right is lost once supply has begun with your prior express consent and acknowledgement that the right is thereby lost. By tapping "Buy" you give that consent and acknowledge the loss of the right of withdrawal.
• Auto-renewal. The current Roundel Premium one-time purchase does not auto-renew. If we introduce subscriptions in the future, the renewal cadence, price, free-trial conditions, and cancellation method will be disclosed at the point of sale, in compliance with Apple App Store Guideline 3.1.2 and Google Play Subscriptions Policy.
• Price changes. For any future subscription, we will give at least 30 days' notice of price changes via the relevant store and an in-app notice, and will require your renewed consent where the law requires it.
• Family Sharing. Apple Family Sharing is currently not enabled for Roundel Premium. We may enable it in the future without notice.

8. Intellectual property

The App, including all source code, artwork, audio, and diagnostic logic, is © Yener Unsal and is protected by copyright, trademark, and other intellectual property laws. The App is licensed, not sold.

This does not extend to third-party or reference data embedded in the App. Such data remains the property of its respective rights holders and is described in the Third-Party Notices.

Open-source components used by the App are listed at Settings → About → Open-source notices, together with their applicable licenses (MIT, Apache 2.0, BSD-3-Clause, etc.). Use of those components is governed by their respective licenses; the relevant license texts are reproduced or linked in that screen.

The name "Roundel" is a descriptive enthusiast term for the BMW logo and is not a trademark of BMW AG.

9. Copyright (DMCA / EU Directive 2019/790) notices

If you believe content in the App infringes your copyright, send a notice that complies with 17 U.S.C. § 512(c)(3) (DMCA) — or the equivalent under Article 17 of EU Directive 2019/790 — to yenerunsal@yahoo.com, including: (a) your physical or electronic signature; (b) identification of the copyrighted work claimed to be infringed; (c) identification of the allegedly infringing material; (d) your contact information; (e) a statement that you have a good-faith belief the use is not authorized; and (f) a statement, under penalty of perjury, that the information is accurate and you are authorized to act on the owner's behalf. We will respond promptly.

10. User conduct

You agree not to:

• Use the App for any unlawful purpose
• Attempt to gain unauthorized access to any system, vehicle, or service
• Interfere with the App's operation or security
• Submit malware, viruses, or harmful code
• Use the App to harass, threaten, or harm any person
• Use the App to misrepresent that you are affiliated with or endorsed by BMW, Apple, Google, or any other party

11. Disclaimer of warranties

THE APP IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, ACCURACY, OR UNINTERRUPTED OPERATION. WE DO NOT WARRANT THAT THE APP WILL BE FREE OF ERRORS OR WILL MEET YOUR REQUIREMENTS.

This disclaimer does not exclude or limit any statutory consumer rights or remedies that cannot be waived under the mandatory law of your country of residence (including the EU Sale of Goods and Digital Content Directives 2019/770 and 2019/771, the UK Consumer Rights Act 2015, the Turkish Consumer Protection Law No. 6502, and the Magnuson–Moss Warranty Act in the United States, where applicable).

12. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL WE BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, DATA, USE, GOODWILL, OR VEHICLE DOWNTIME, ARISING OUT OF OR IN CONNECTION WITH THESE TERMS OR THE APP, WHETHER IN CONTRACT, TORT, OR ANY OTHER LEGAL THEORY, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

OUR TOTAL AGGREGATE LIABILITY UNDER THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID FOR THE APP IN THE TWELVE (12) MONTHS PRECEDING THE EVENT GIVING RISE TO LIABILITY, OR (B) USD 50 (or the equivalent in your local currency).

THIS LIMITATION DOES NOT APPLY TO LIABILITY FOR (i) DEATH OR PERSONAL INJURY CAUSED BY OUR NEGLIGENCE, (ii) FRAUD OR FRAUDULENT MISREPRESENTATION, (iii) GROSS NEGLIGENCE OR WILLFUL MISCONDUCT, OR (iv) ANY OTHER LIABILITY THAT CANNOT BE LIMITED OR EXCLUDED BY APPLICABLE LAW.

13. Indemnification

You agree to indemnify, defend, and hold harmless Yener Unsal and his affiliates from and against any third-party claim, damage, liability, or cost (including reasonable attorneys' fees) arising out of (i) your misuse of the App, (ii) your use of the App on a vehicle you do not own or are not authorized to service, (iii) your violation of these Terms, or (iv) your violation of applicable law or third-party rights.

14. Termination

• You may terminate at any time by uninstalling the App.
• We may terminate or suspend your license if you materially breach these Terms or violate applicable law. We will give reasonable notice where possible.
• Sections 8 (IP), 9 (Copyright notices), 11 (Disclaimer), 12 (Limitation), 13 (Indemnification), 16 (Governing law), 17 (Apple-specific), and 21 (Entire agreement) survive termination.

15. Export controls

The App is subject to U.S. Export Administration Regulations and similar export-control laws of other jurisdictions. You agree not to export, re-export, or transfer the App, directly or indirectly, in violation of such laws, including to any country, person, or entity subject to U.S., EU, UK, UN, or Türkiye sanctions.

16. Governing law and dispute resolution

• These Terms are governed by the laws of the Republic of Türkiye, without regard to its conflict-of-laws principles.
• Subject to mandatory consumer-protection laws of your country of residence, exclusive jurisdiction lies with the competent courts and consumer-arbitration tribunals of Istanbul, Türkiye.
• EU consumers: nothing in this section deprives you of the protection of mandatory provisions of the law of your country of residence, including your right to bring proceedings before the courts of your domicile. EU consumers may also use the European Commission's Online Dispute Resolution platform: https://ec.europa.eu/consumers/odr.
• California / U.S. consumers: small-claims court remains available.
• Turkish consumers: rights under Turkish Consumer Protection Law No. 6502, including access to consumer arbitration committees ("Tüketici Hakem Heyeti") and consumer courts, remain available.

17. Apple-specific terms

The following terms apply to your use of the App on Apple devices and are required by Apple under Schedule 1 of the Apple Developer Program License Agreement.

• a) Acknowledgement. These Terms are concluded between you and us. Apple Inc. ("Apple") is not a party to these Terms.
• b) Scope of licence. The licence granted to you for the App is limited to a non-transferable licence to use the App on any Apple-branded products that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms.
• c) Maintenance and support. We are solely responsible for providing any maintenance and support services for the App. Apple has no obligation whatsoever to furnish any maintenance and support services with respect to the App.
• d) Warranty. We are solely responsible for any product warranties, whether express or implied by law, to the extent not effectively disclaimed. In the event of any failure of the App 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 applicable law, Apple will have no other warranty obligation whatsoever with respect to the App. Any other claims, losses, liabilities, damages, costs, or expenses attributable to any failure to conform to any warranty will be our sole responsibility.
• e) Product claims. We, not Apple, are responsible for addressing any claims by you or any third party relating to the App or your possession and use of the App, including but not limited to (i) product-liability claims; (ii) claims that the App fails to conform to any applicable legal or regulatory requirement; and (iii) claims arising under consumer-protection, privacy, or similar legislation. The App does not use HealthKit, HomeKit, ClassKit, CallKit, or SiriKit at this time.
• f) Intellectual-property rights. In the event of any third-party claim that the App or your possession and use of the App infringes that third party's intellectual property rights, we, not Apple, will be solely responsible for the investigation, defence, settlement, and discharge of any such intellectual-property infringement claim.
• g) Legal compliance. You represent and warrant that (i) you are not located in a country subject to a U.S. Government embargo, or that has been designated by the U.S. Government as a "terrorist supporting" country; and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties.
• h) Developer name and address. Yener Unsal, Ritim İstanbul AVM, Cevizli Mah. Zühal Cad. A Blok No:46 İç Kapı No:50, 34846 Maltepe / İstanbul, Türkiye. Email: yenerunsal@yahoo.com
• i) Third-party terms. You must comply with applicable third-party terms when using the App, including (without limitation) the Apple Media Services Terms when making in-app purchases.
• j) Third-party beneficiary. You acknowledge and agree that Apple, and Apple's subsidiaries, are third-party beneficiaries of these Terms, and that, upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary thereof.

18. Google Play-specific terms

• Your use of the App through Google Play is also subject to the Google Play Terms of Service (https://play.google.com/about/play-terms/) and the Google Play Developer Distribution Agreement.
• All digital-good purchases made within the App on Android must use Google Play Billing as required by the Google Play Payments Policy. We do not offer alternative in-app payment channels.
• Where the App requests sensitive permissions (Bluetooth, location for BLE), the App will provide a clear in-app rationale, in line with the Google Play User Data policy.

19. Severability

If any provision of these Terms is held unenforceable, the remaining provisions remain in full force and effect, and the unenforceable provision will be replaced by an enforceable provision that comes closest to the parties' original intent.

20. Assignment

You may not assign these Terms without our prior written consent. We may assign these Terms in connection with a merger, acquisition, reorganization, or sale of substantially all of our assets, on prior notice to you.

21. Entire agreement

These Terms, together with the Privacy Policy and any platform-specific addendum, constitute the entire agreement between you and us regarding the App and supersede any prior or contemporaneous understandings.

22. Changes to these Terms

We may update these Terms from time to time. Material changes will trigger an in-app notice on the next launch and a notice on this page. The "Last updated" date at the top of this document indicates when these Terms were last revised. Continued use of the App after a change constitutes acceptance of the new Terms.

23. Contact