Bluetooth Diagnostics
Pair with any ELM327 OBD2 Bluetooth adapter. Read and clear diagnostic trouble codes directly from your phone in seconds.
Diagnose.
Repair.
Know Your Car.
Wrench Buddy turns your Android phone into a professional-grade diagnostic tool. Read trouble codes, monitor live data, record trips, and stay ahead of repairs — all for free.
Everything in Your Glove Box,
Minus the Confusion
Six core tools that give you real insight into your vehicle — no expensive scanner required.
3,173 DTC Codes
Full P, C, B, and U code database with plain-English descriptions, repair estimates, DIY difficulty ratings, and drive safety guidance.
Live Data — 24 PIDs
Monitor engine RPM, coolant temp, fuel trim, O2 sensors, throttle position, and more in real time. Automotive-style dial gauges included.
My Garage
Track multiple vehicles with one-tap VIN decoding via the official NHTSA database. Camera scanning makes adding a car instant.
Trip Recorder
GPS trip tracking with OBD data overlays. Review distance, duration, average speed, and max speed for every drive.
Maintenance Reminders
Twelve service categories with mileage-based reminders and full history tracking. Never miss an oil change or tire rotation again.
Get Rolling in Minutes
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Plug In Your Adapter
Connect an ELM327 OBD2 Bluetooth adapter to the OBD-II port under your dashboard — usually near the steering column or fuse box.
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Pair via Bluetooth
Open Wrench Buddy, tap Connect Scanner, select your adapter, and wait for the green Connected indicator.
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Diagnose & Maintain
Scan for codes, watch live data, log a trip, or set up maintenance reminders. Full control from one free app.
See It in Action
A quick look at the screens you'll use most.
Codes Screen
Live Data Gauges
My Garage
Trip History
Need More Help?
Our repair guides cover reading your first DTC code, understanding OBD2 readiness monitors, and pairing Bluetooth adapters step by step.