App Terms and Conditions

RestoTach Terms and Conditions

Effective Date: 8/15/2026

Last Updated: 8/15/2026

These Terms and Conditions (the "Terms") are a legal agreement between you and RestoTach LLC, an Arizona limited liability company ("RestoTach," "we," "us," or "our"), governing your use of the RestoTach mobile application, the firmware running on RestoTach hardware, and any related software or services (collectively, the "App").

Please read Section 6 (Safety) carefully. It describes important limits on how the App and RestoTach hardware may be used.

By downloading, installing, or using the App, you agree to these Terms. If you do not agree, do not use the App.

1. Eligibility

You must be at least 18 years old, or the age of majority in your jurisdiction, and able to form a binding contract to use the App. If you use the App on behalf of a business, you represent that you have authority to bind that business to these Terms.

2. Definitions

•       "Hardware" means RestoTach physical products, including the Main Hub, display pods, sensor boards, and harnesses.

•       "Firmware" means the software embedded in or delivered to the Hardware.

•       "Content" means gauge themes, configurations, calibration profiles, and other materials you create or upload in the App.

3. License

Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to install and use the App on devices you own or control, and to use the Firmware solely as embedded in Hardware you own, in each case for your own personal or internal business purposes.

You may not:

•       copy, modify, translate, or create derivative works of the App or Firmware, except as permitted by law that cannot be contractually waived;

•       reverse engineer, decompile, or disassemble the App or Firmware, or attempt to derive source code;

•       distribute, rent, lease, lend, sell, sublicense, or host the App as a service;

•       install Firmware on hardware not manufactured or authorized by RestoTach, or install non-RestoTach firmware on Hardware and then seek warranty support;

•       circumvent any security, licensing, or access control mechanism;

•       use the App to violate any law, or to interfere with any vehicle's emissions controls or safety systems; or

•       remove or obscure any proprietary notice.

We reserve all rights not expressly granted.

4. No Accounts

The App does not require you to create an account. Your vehicle configuration, calibration values, and gauge themes are stored on your device and on your Hardware, not on our servers. You are responsible for maintaining that data, including keeping your own backup of any configuration you would not want to re-enter. We cannot restore settings for you.

5. Hardware Installation and Vehicle Compliance

Installation of RestoTach Hardware involves working with vehicle electrical systems, and in some configurations with fuel, oil, and cooling systems. You are solely responsible for:

•       installing the Hardware correctly and safely, or having it installed by a qualified professional;

•       verifying that sensor calibration values entered in the App match the sensors actually installed;

•       ensuring that your installation and use comply with all applicable laws and regulations, including vehicle equipment, emissions, and inspection requirements in your jurisdiction; and

•       confirming that your vehicle remains road-legal after modification.

RestoTach is not responsible for damage, injury, or legal consequences arising from improper installation, incorrect configuration, or use of the Hardware in a manner that violates applicable law.

6. Safety, Accuracy, and Driver Attention

Read this section before using the App or Hardware while driving.

6.1 Not a safety-critical instrument. The App and Hardware display information for informational and enthusiast use. They are not certified instrumentation and are not a substitute for your vehicle's original equipment gauges, warning lamps, or safety systems. Do not rely on RestoTach displays as your sole source of information about the condition of your vehicle.

6.2 Accuracy limitations. Displayed values depend on sensor accuracy, calibration values you enter, wiring quality, ECU and OBD-II data availability, signal timing, and vehicle conditions. Readings may be delayed, inaccurate, out of range, or unavailable. Displayed speed may differ from your vehicle's actual speed and is not a legal reference for speed limit compliance.

6.3 Diagnostic codes. Diagnostic trouble codes and readiness monitor status are reported by your vehicle, not by RestoTach. Clearing codes through the App erases stored diagnostic information and resets emissions readiness monitors, which may cause your vehicle to fail an emissions inspection until the monitors complete their drive cycles. Clearing a code does not repair the underlying condition. Consult a qualified technician before clearing codes.

6.4 Navigation and maps. Map and navigation features are not included in the current release.

6.5 Driver distraction. Do not configure gauges, enter destinations, browse themes, or otherwise interact with the App while operating a vehicle. Perform all setup and configuration while the vehicle is safely parked. You are responsible for operating your vehicle safely and lawfully at all times.

6.6 Competition use. If you use the Hardware in racing, track, or off-road environments, you do so entirely at your own risk and are responsible for compliance with the rules of any sanctioning body.

7. Firmware and Software Updates

We may make updates to the App and Firmware available from time to time. Some updates are required for continued operation or interoperability between the App, Hub, and display pods. Updates may add, modify, or remove features. Do not interrupt power or Bluetooth connectivity during a Firmware update; doing so may render Hardware inoperable and may not be covered by warranty.

8. Pre-Release and Beta Software

Software distributed through TestFlight, an open or closed testing track, or otherwise identified as beta, preview, or pre-release is provided for evaluation only. It may be unstable, incomplete, or discontinued without notice, and is provided as is without any warranty. Do not rely on pre-release software in a vehicle you depend on.

9. Third-Party Products and Trademarks

The App works with third-party products, including OBD-II adapters and aftermarket engine control units. Those products are governed by their manufacturers' own terms and warranties, and we are not responsible for their performance or availability.

All third-party names and marks referenced in the App or our materials — including Holley, MaxxECU, Haltech, AEM, MegaSquirt, ECUMaster, Edelbrock, Emerald, OBDLink, and any vehicle manufacturer names are the property of their respective owners. Their use is for compatibility identification only and does not imply affiliation with, sponsorship by, or endorsement from those owners.

10. Your Content

You retain ownership of Content you create. Content is stored on your device and on your Hardware; we do not host or receive it. If you voluntarily send us Content as part of a support request, you grant us permission to use it solely to diagnose and resolve your issue.

You are responsible for your Content and represent that it does not infringe anyone's rights.

11. Intellectual Property

The App, Firmware, Hardware designs, gauge face renderer, theme presets, RestoTach name and logo, and all related intellectual property are owned by RestoTach LLC and protected by copyright, trademark, and other laws. These Terms grant you a license, not a sale of any rights.

12. Purchases and Fees

The App is provided free of charge for use with RestoTach Hardware. There are no in-app purchases or subscriptions. Hardware purchases are governed by the terms of sale posted at restotach.com.

13. Disclaimer of Warranties

THE APP AND FIRMWARE ARE PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED. TO THE FULLEST EXTENT PERMITTED BY LAW, RESTOTACH DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, COMPATIBLE WITH ANY PARTICULAR VEHICLE OR ECU, OR THAT DISPLAYED DATA WILL BE ACCURATE.

Some jurisdictions do not allow the exclusion of implied warranties, so some of the above may not apply to you. Any limited warranty on Hardware is stated separately in the Hardware warranty terms.

14. Limitation of Liability

TO THE FULLEST EXTENT PERMITTED BY LAW, RESTOTACH AND ITS OWNERS, EMPLOYEES, AND SUPPLIERS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR LOSS OF PROFITS, DATA, GOODWILL, VEHICLE USE, OR ENGINE OR VEHICLE DAMAGE, ARISING OUT OF OR RELATED TO THE APP, FIRMWARE, OR HARDWARE, WHETHER BASED IN CONTRACT, TORT, STRICT LIABILITY, OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

OUR TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS RELATING TO THE APP WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID TO RESTOTACH FOR THE APP AND THE HARDWARE AT ISSUE IN THE TWELVE MONTHS PRECEDING THE CLAIM, OR (B) ONE HUNDRED U.S. DOLLARS.

NOTHING IN THESE TERMS LIMITS LIABILITY FOR DEATH OR PERSONAL INJURY CAUSED BY OUR NEGLIGENCE, FOR FRAUD, OR FOR ANY OTHER LIABILITY THAT CANNOT BE LIMITED UNDER APPLICABLE LAW.

15. Indemnification

You agree to indemnify and hold harmless RestoTach and its owners, employees, and agents from any claims, damages, losses, and expenses (including reasonable attorneys' fees) arising from your use of the App or Hardware, your Content, your installation or modification of a vehicle, or your violation of these Terms or applicable law.

16. Termination

You may stop using the App at any time by uninstalling it. We may suspend or terminate your access if you violate these Terms or if we discontinue the App. Sections 3 (restrictions), 6, 9, 11, 13, 14, 15, 17, and 21 survive termination.

17. Governing Law and Disputes

These Terms are governed by the laws of the State of Arizona, without regard to its conflict of laws principles, and by applicable U.S. federal law.

Venue. The state and federal courts located in Maricopa County, Arizona will have exclusive jurisdiction over any dispute arising out of or relating to these Terms, the App, the Firmware, or the Hardware. You and RestoTach each consent to personal jurisdiction and venue in those courts and waive any objection based on inconvenient forum.

Small claims. Nothing in this section prevents either party from bringing an individual claim in a small claims court of competent jurisdiction, provided the claim remains individual and within that court's limits.

Informal resolution first. Before filing a claim, you agree to contact us at support@restotach.com with a written description of the dispute and to allow us thirty (30) days to attempt to resolve it. Most issues are resolved faster this way than through any court.

Time limit. To the extent permitted by law, any claim arising out of or relating to these Terms or the App must be filed within one (1) year after it arises, or it is permanently barred.

If you are a consumer resident in the EEA, UK, or another jurisdiction with mandatory consumer protections, nothing here deprives you of the protections of your local law.

18. Apple App Store Terms

These additional terms apply if you obtained the App from the Apple App Store:

•       These Terms are between you and RestoTach only, not Apple. RestoTach, is solely responsible for the App and its content.

•       Your license is limited to using the App on Apple-branded devices 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.

•       If the App fails to conform to any applicable warranty, you may notify Apple, and Apple may refund the purchase price. To the maximum extent permitted by law, Apple has no other warranty obligation with respect to the App.

•       Apple is not responsible for addressing any claim by you or a third party relating to the App, including product liability, legal or regulatory compliance, or consumer protection claims.

•       Apple is not responsible for investigating, defending, settling, or discharging any third-party intellectual property infringement 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 its subsidiaries are third-party beneficiaries of these Terms and may enforce them against you.

19. Google Play

If you obtained the App from Google Play, your use is also subject to the Google Play Terms of Service. Google is not a party to these Terms and has no responsibility for the App.

20. Export Compliance

You may not use or export the App in violation of U.S. export laws and regulations.

21. General

These Terms, together with the Privacy Policy, are the entire agreement between you and RestoTach regarding the App. If any provision is found unenforceable, the remaining provisions stay in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms; we may assign them in connection with a merger, acquisition, or sale of assets. We may modify these Terms by posting an updated version and updating the "Last Updated" date; material changes will be noticed in the App or by email, and continued use after the effective date constitutes acceptance.

22. Contact

RestoTach LLC

support@restotach.com