simos.app Dongle
Your compact Simos flasher and logging tool.
Flash, tune, and diagnose your car directly through the OBD port via Bluetooth — built for the simos.app.
For some cars the dongle needs an extension, as the case is to wide for the narrow OBD port enclosure. This will be fixed in a future dongle version.
Flash, tune, and diagnose your car directly through the OBD port via Bluetooth — built for the simos.app.
For some cars the dongle needs an extension, as the case is to wide for the narrow OBD port enclosure. This will be fixed in a future dongle version.
Designed and assembled in Switzerland
Development Device
This is a development and research tool intended for use in controlled environments. It is not a certified consumer product. The device has not undergone Bluetooth SIG, CE, or FCC certification. By purchasing, you acknowledge that this device is intended for development, testing, and educational purposes only.
Features
Real-Time Logging
Log engine parameters at 10Hz over Bluetooth Low Energy. Monitor boost, knock, lambda, timing and more in real time. Diagnose issues before they become problems.
Flash via OBD
Use this Simos flash tool to write ECU calibrations directly through the OBD-II port. Flash your own car or help others — no bench setup required.
Compact Design
Small form factor that plugs directly into your OBD-II port. No external power supply needed. Take it with you wherever you go.
Open Protocol
Works with the simos.app. Also compatible with SimosTools (Android, needs different firmware) and VW_Flash (Desktop). BLE-based protocol for easy integration with custom tools. Longcoding support for selected control modules coming soon.
What You Can Do
Whether you want to flash a tune onto your own car, update a friend's ECU, or log diagnostic values to track down an issue — this Simos flasher has you covered. Use it as a Simos flash tool to read and write calibrations over OBD, or as a live logging tool to monitor engine parameters in real time.
Coming soon: longcoding support for selected control modules, letting you configure comfort features, enable hidden options, and customize your car beyond the tune.
Coming soon: longcoding support for selected control modules, letting you configure comfort features, enable hidden options, and customize your car beyond the tune.
Specifications
Connectivity — Bluetooth LE
Protocol — UDS
Supported ECUs — Simos 12.1 / 18.x
Logging Rate — Up to 10Hz
Power — OBD-II (12V)
Flash Support — Flash CAL or FULL bin (only Simos 18.x)
Protocol — UDS
Supported ECUs — Simos 12.1 / 18.x
Logging Rate — Up to 10Hz
Power — OBD-II (12V)
Flash Support — Flash CAL or FULL bin (only Simos 18.x)