Android app
Everything the OBD Log app does
Live data, trips, AI, video with data, a track lap timer and CAN bus. Plug in a Bluetooth or Wi-Fi OBD2 adapter and start.
Day to day
Live data
Your phone becomes the car's diagnostic panel, for any make and model.
Example:RPM 1,136 rpmBattery 13.4 V
- OBD2 adapter over Bluetooth or Wi-Fi.
- The app finds the car's protocol by itself and remembers it for next time.
- RPM, engine temperature, load, MAP, MAF, TPS, timing advance, fuel trims, oxygen sensors and battery voltage.
- No data the ECU reports is thrown away. Even what the app does not know yet is kept, and you can give it a name and a unit.
No internet, no loss
- Every reading is saved on the phone and only deleted after the server confirms it.
- With no connection, the queue waits and goes out on the next transmission.
- The screen can turn off and sending continues.
Dashboards your way
- Dashboard with custom cards: current value, minimum, maximum and average for the period.
- Math between signals, such as MAP − atmospheric pressure.
- Account summary in large numbers.
Fuel economy and gear
- Estimated fuel economy in km/l, calculated from air flow (MAF).
- Gear indicator even when the car does not report it, calculated from the gearbox ratios and the tire.
- Shift alert with RPM per gear, launch RPM and beep.
Performance
- Acceleration times: 0–100 km/h and custom ranges.
- Braking with time and distance.
- 201 m and 400 m.
- Measured by GPS or by the ECU's speed.
Trips
Trip history
Every time the car runs it becomes a trip in your account, to look at later.
- Every trip with route, engine data and analysis.
- Name your trips.
- Fault codes (DTC).
- Follow how the car changes over time.
- The history stays in your account on our servers, not on the phone.
Artificial intelligence
An AI keeping an eye on your car
Connect the AI you already use to the car's data. It follows, analyzes and explains what it found.
See the AI page- Claude, Cursor, VS Code and Gemini, over the open MCP protocol.
- Follows live, analyzes the whole trip and compares it with the history.
- Every finding comes with the evidence: the data that led to the conclusion.
- Read-only access, which you can see and revoke in the app.
- All good
- Attention
- Problem
Video
Video with telemetry and live streaming
The phone's camera records the road and the car's data goes into the video itself.
Recording with the data burned in
- Each value as text, gauge or bar, with the color, size and background you choose.
- Data from OBD/ECU, GPS (speed, altitude, heading) and clock.
- Named saved layouts, which work for any car.
- Floating window (picture-in-picture) to keep recording with another app open.
Live streaming
- Stream through the OBD Log server without pasting a stream key.
- The app creates a link for anyone to watch in a browser.
- It also delivers just the video for VLC or OBS.
- Data panel as a transparent browser source for OBS and vMix.
Race · timing
Track lap timer
Laps, sectors and a guided start, with your phone's GPS or the OBD Log Trace for maximum performance.
See the Race page- Point-to-point track or circuit with laps and sectors.
- Guided start with countdown and reaction time.
- Tracks published by the community and rankings among drivers.
- The time shows in the video and starts with the recording.
CAN bus
Reading CAN signals
The app listens to the car's CAN bus without sending anything and decodes the data with definitions created by users themselves.
See the CAN signals page- Passive listening on the CAN bus.
- The community publishes signal definitions (JSON or DBC) per car.
- Install, update only if you want to and report a wrong definition.
- AI helps decode signals nobody has mapped yet.
Tuned engines
Standalone ECUs
Reads straight from the ECU over Bluetooth serial or a Wi-Fi bridge, at 5 samples per second.
Being planned: how the app will talk to ECUs that broadcast only over CAN (e.g. FuelTech, Haltech, Link) is still being planned.
- Speeduino, MegaSquirt MS2/Extra and MS3 checked against the firmware's official file.
- rusEFI, experimental.
- AFR, lambda, target AFR, VE, boost target and duty, flex, injector pulse width and duty, fuel and oil pressure, knock count.
- Alerts for lean mixture at full load, deviation from target AFR, high injector duty, overboost and knock.
Sharing
One car, several drivers
Invite whoever drives the car. Trips belong to the car, with the name of who drove.
- Invitation by single-use code, valid for 48 h.
- Trips belong to the car, not the driver: everyone sees the same history.
- Each trip shows who drove, and the owner can remove a driver at any time.
Safety and data
Your data is yours
You decide who sees your car's data, download a copy and delete it whenever you want.
Privacy
- Download a copy of everything.
- Delete a trip or the whole account from the app itself.
- HTTPS-only connection.
- Compliant with LGPD, Brazil's data protection law.
The app only reads the car
- OBD Log only reads the ECU's information. It never commands.
- It sends no actuator tests, adaptations or programming to the car.
- The AI's access is read-only too.
Plans
Free or PRO
PRO will be a monthly subscription on Google Play once the app is published.
Free
15days of history
PRO
60days of history
Linking an OBD Log Core or Trace to your account gives you PRO without a subscription.
Meet the OBD Log hardwareAlso in the app
- App in Portuguese, English and Spanish.
- First-run assistant: vehicle, ECU type and adapter.
- Several vehicles in the same account.
- The app tells you when a new version is out and updates from there.
Want to see this on your car?
OBD Log is in Beta. Download the app and try it before everyone else.