Connect a compatible OBD2 adapter, read the check-engine evidence your car exposes, and see the cheapest useful test to run next—without pretending a code proves a broken part.
Public Android release · 3 free scans · No account required
ScanWrench is designed to preserve context before anyone clears codes or starts replacing parts.
Read supported current, pending, and permanent OBD2 codes, then separate what the vehicle observed from what still needs testing.
Keep available freeze-frame, readiness, protocol, and connection context together so the failure scene does not disappear without a record.
Look for fault memory and incomplete readiness monitors before a purchase, while keeping unsupported systems clearly labeled as not checked.
A product name alone cannot guarantee coverage. ScanWrench checks the Android phone, adapter, transport, protocol, vehicle, and requested function before calling a feature available.
Generic emissions OBD2, manufacturer-enhanced data, full-system access, and state-changing functions are different capability levels. Unsupported modules remain labeled not checked instead of being presented as healthy.
Public availability is simple; trustworthy diagnostics still require honest boundaries.
Yes. ScanWrench is available from its public Google Play listing; tester approval is no longer required.
The app is free to download and starts with three free scans. Google Play displays any currently available paid offer before purchase.
ScanWrench can evaluate compatible BLE, Wi-Fi, and supported Bluetooth Classic adapter candidates on Android. The exact adapter, firmware, transport, vehicle, and requested feature still determine coverage.
No. A code identifies a detected condition. ScanWrench keeps observed facts, possible causes, unknowns, and the next useful test separate.
No. Device Only keeps supported records on the phone, while Save Nothing discards the session. An account is optional for supported cloud features.
Download ScanWrench from Google Play, bring a compatible OBD2 adapter, and keep the phone secured while driving.
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