Android field diagnostics · v2.0
Multi-protocol bus diagnostics that run on the phone in your pocket
Plug an adapter into an Android phone or tablet and see live bus traffic, decoded signals and diagnostics — CAN and CAN FD, OBD-II, Modbus RTU/TCP and raw serial, with native UDS. No laptop, no account, no connection.
Google Play · Coming soon
The Play Store listing is not live yet. Leave your email address and we will tell you when it is — nothing else is sent to that address.
Demo Mode simulates every protocol, so the app can be evaluated without hardware.
Latest release
New in 2.0
- CAN & CAN FD, OBD-II, J1939, UDS, Modbus and serial in one app
- Tablet layouts with side-by-side details
- Works without USB OTG over Bluetooth or Wi‑Fi
- Demo Mode: every feature without hardware
Who it is for
Built for people who work on buses, not dashboards
Workshops
Read manufacturer fault detail through UDS instead of stopping at a generic P-code.
Fleet engineers
J1939 PGN and SPN decode on heavy vehicles, captured and exported from the vehicle itself.
Machinery & agriculture
CAN and Modbus on the same tool, in a field with no signal and no laptop bench.
Embedded developers
Raw serial, ISO-TP, periodic transmit and DBC decode for bring-up and bench work.
Protocol matrix
Four bus families, one app
| Bus | Transport | What it does |
|---|---|---|
| CAN (classic + FD) | USB — PEAK PCAN-USB / PCAN-USB FD, and CANable/SLCAN-class adapters | Live monitor, ID and signal filtering, transmit (single or periodic), DBC signal decode, live plotting, native ISO-TP + UDS diagnostics, J1939 PGN/SPN decode |
| OBD-II | ELM327 over USB, Bluetooth Classic (SPP), Bluetooth LE, or Wi-Fi/TCP | 23 live PIDs, current/pending/permanent fault codes, freeze frame, VIN and ECU info, automatic supported-PID probing |
| Modbus | RTU over USB or Bluetooth serial, or Modbus TCP | Sniffer plus read/write master — coils, holding and input registers, live register plotting |
| Serial | USB, Bluetooth (SPP or BLE), or TCP | Raw terminal with configurable framing |
Full detail per protocol family is on the features page.
The difference
It works completely offline
No account, no sign-in, no telemetry, no analytics SDK, no crash reporter phoning home. Bus and vehicle data is processed on the device and never leaves it unless you export a file and share it yourself. A commercial licence activates with no network connection and keeps working without one.
That is not a slogan, it is a working condition. Workshops in basements and underground car parks have no signal. Field service is often out of coverage for a whole day. And plenty of customers have a security policy that simply forbids a diagnostic tool that calls home — this one has nothing to call.
- accounts: none
- network required: no
- telemetry: none
- analytics SDK: none
- crash reporting: local export only
- licence activation: offline
Pricing
Free tier, Personal, Commercial
| Tier | How it is sold | What you get |
|---|---|---|
| Free | No purchase | 30-day full-featured trial, then free with streaming capped at 10 minutes per session; export and DBC import locked. |
| Personal | One-time purchase or monthly subscription through Google Play | All features for personal, non-commercial use only. |
| Commercial | Sold directly | Perpetual licence for business use. One key per device, transfers free. |