Professional car diagnostics.
In your pocket.

Fixie connects to your car through any common OBD-II Bluetooth adapter and gives you the full picture: every module on the network, fault codes with plain-English explanations, live sensor data, emissions readiness, and verified code clearing.

Download on the App Store
134+
brands with enhanced data
1,251
vehicle profiles
118,773
enhanced live parameters
9
network protocols

What Fixie does

Full network discovery

Finds every control module the car exposes — engine, transmission, ABS, airbag, body, cluster and more — across all the networks the vehicle actually has, then shows the whole tree.

Per-module fault codes

Open any module and read its stored, pending and permanent codes with explanations. Clearing is verified: Fixie re-reads after the clear and tells you if a code came back.

Live data that actually works

Generic OBD-II plus brand-enhanced parameters: per-cylinder misfire counters, transmission temps and pressures, wheel speeds, battery health — whatever the vehicle serves.

Emissions readiness

Monitor-by-monitor readiness with honest not-supported handling — know before the inspection station does.

Identity & calibration

VIN, calibration IDs and CVNs straight from the modules — catch swapped or reflashed ECUs.

Private by design

Scans, logs and settings stay on your phone. No accounts, no tracking, no ad IDs. Optional cloud features only run when you tap them.

Works with the adapters people actually own

OBDLink MX+ / CX incl. MFiVeepeakViecarvLinkerKiwi 3vGateGeneric ELM327 BLE clones

Cheap no-name adapter? Fixie probes the standard service layouts too, retries clones that wake slowly, and tells you plainly when an adapter is a known counterfeit.

Network & protocol coverage

CAN 11-bit (ISO 15765) CAN 29-bit extended MS-CAN Ford medium-speed* SW-CAN GM single-wire* VW TP2.0 dynamic channels J1850 VPW GM Class 2 J1850 PWM Ford SCP ISO 9141-2 KWP2000 ISO 14230

*MS-CAN and SW-CAN need a multi-bus adapter (OBDLink MX+ class). Fixie detects your adapter's capability and never pretends a bus is reachable when the hardware can't get there.

See the full make & model coverage map →