Requires a Bluetooth LE (Bluetooth 4.0 or later) ELM327 OBD-II adapter. Classic Bluetooth and Wi-Fi adapters don't work.

Check engine light on and no idea if it's serious? Rodar reads what your car is saying and explains it in plain language, so you walk into the shop knowing what to ask.

An OBD2 car scanner on your phone: with an ELM327 adapter, Rodar runs a car diagnostic, reads the trouble codes (DTC) behind the check engine light and shows engine sensors in real time.

FREE
• Read confirmed and pending trouble codes
• Freeze frame: the engine conditions at the moment the code was stored
• Live dashboard with the sensors your car reports: RPM, coolant temperature, engine load, fuel trims and more
• Clear codes, with a clear warning about what that does and doesn't fix

RODAR PRO
• AI-assisted reading of every diagnosis: probable causes, how confident each one is and how to check it
• Ready-made questions to take to your mechanic
• Record sessions while you drive: tap the screen when you feel the symptom, and Rodar compares what happened at idle and under load, which is what tells one fault from another

HOW IT WORKS
1. Plug the adapter into the OBD-II port, under the dashboard near the pedals.
2. Turn the ignition on and pick the adapter in Rodar.
3. Read the codes or watch the sensors live.

Works with most cars that have an OBD-II port, standard on cars sold in the US since 1996 and in Europe since the early 2000s. Available data varies by model: Rodar asks the car what it supports and shows only what exists.

The assisted reading is an interpretation of sensor data, not an inspection report. Confirm with a mechanic before replacing parts.

SUBSCRIPTION
Rodar Pro is a monthly or yearly subscription, with a 7-day free trial for first-time subscribers. Payment is charged to your store account when you confirm the purchase, and it renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel it in your store account settings.

Privacy policy: https://rodar-obd2.web.app/privacy.html