This app transforms your phone into a professional OBD-II scanner, providing AI-powered explanations for check-engine lights, repair cost estimates, and DIY repair guides. It also includes a recall checker and a vehicle maintenance tracker.
1.5
July 25, 2026
NEW: Free repair-quote checker. Got a quote from a shop? Paste it in and instantly see if the price is fair for your car and your state — plus red flags to watch for and the questions to ask before you say yes. Free for everyone: no account, no card, and it never uses a diagnosis credit. Find it on the home screen, in the Toolbox, or right on the sign-in screen. Also in this release: clearer Shop-plan pricing info and small fixes.
MoreDiagnosis history, recall checks & repair guides
RedlineAi is an application that turns your smartphone into a professional-grade OBD-II scanner. It uses AI to explain diagnostic trouble codes, provide repair cost estimates, and offer DIY repair guidance.
Yes, a Bluetooth Low Energy (Bluetooth 4.0) OBD-II adapter is required for live scanning and diagnostics. These adapters are sold separately and are compatible with common models like Vgate iCar Pro BLE 4.0 and Veepeak BLE+.
You can read stored, pending, and permanent trouble codes, view live engine data (RPM, speed, temperature, etc.), check your VIN, and get instant AI diagnoses with repair cost estimates and part purchasing information.
Yes, RedlineAi includes a 'Your Garage' feature where you can save all your vehicles, track service history and mileage, and receive reminders for upcoming maintenance, ensuring you never miss an oil change.
The app provides fair-price estimates for repairs in your local area. This information is based on various data points and aims to help you avoid overpaying at a repair shop.
RedlineAi offers optional auto-renewing subscriptions: Silver, Gold, and Diamond. These are available in 1-month or 1-year plans, with specific titles, lengths, and prices displayed within the app before purchase.
You can manage or cancel your subscription directly in your Apple Account settings after purchase. Auto-renewal can be turned off at least 24 hours before the end of the current subscription period.
RedlineAi is built for everyday drivers and provides informational diagnostic guidance. However, it does not replace a certified mechanic for safety-critical repairs.