Mobile applications



GAS COMPUTER is an innovative solution allowing the control of LPG combustion in cars equipped with the latest generation of STAG autogas systems. Download and use for free.

Exceptional features of the tool


  • It responds to the needs and expectations of car users with STAG autogas systems.
  • Created by the leader and manufacturer of autogas systems - AC S.A.
  • The only mobile application in the world to present the momentary and average consumption of gas and the cost of travel.
  • Gas Computer does not allow the accidental changing of the parameters of the autogas controller. The application is intended for only reading and displaying data so it is comfortable and safe to use.
  • The above-mentioned feature guarantees the continuation of warranty.



  • With the GPS receiver, the driver can observe readings of gas consumption per l/100km –both momentary and average, or, control the amount of used fuel.
  • In-built calculator allows a real-time estimation of fuel expenses.
  • Access to OBD-II/EOBD parameters of the vehicle.
  • Viewing stored errors or warnings reported by the controller.

The application works only with Q-generation controllers, i.e. STAG-4 QBOX, STAG-4 QNEXT, STAG-300 QMAX.

Operation is simple and will satisfy even the most demanding users – for communication with the controller, the use of Bluetooth Next or USB is recommended – only when the Smartphone/tablet is equipped with the so-called USB host.

Remember that the application is free.

New functions:

  • New screen for Bluetooth settings – clear visualization
  • Update of translated application settings



STAG MOBILE is a comfortable and easy application used to access the full software of AC STAG on a smartphone or tablet. With this free application you can access all the controller’s configuration options. The application is a mobile version of the desktop AC STAG application.

Exceptional features of the tool:


  • It makes work easier and supports workshop operations;
  • Also available to advanced users who are not professional mechanics;
  • It allows wireless corrections (via Bluetooth Next interface);
  • Opening the bonnet is not required and connecting a computer to the diagnostic connector of the autogas system.




  • software for STAG calibration ;
  • extra additions for the driver with real-time controls of autogas system parameters;
  • OBD reader function to allow the viewing the parameters of the on-board diagnostic interface;
  • integrated OBD2/EOBD scanner function in a single application and a single device;


The application only works with the Q-generation and DPI controllers, i.e. STAG-4 QBOX, STAG-4 QBOX NEXT, STAG-300 QMAX, STAG-400 DPI. You only need a dedicated STAG Bluetooth NEXT interface and STAG MOBILE application installed in a smartphone to start.

Remember that the application is free.


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