simos.app

VAG ECU Diagnostics & Logging

Only for iPhone

Free

iPhone

Connect to your Audi or VW via Bluetooth. simos.app is a diagnostic and data logging tool built specifically for VAG petrol engines running Simos 18.1, 18.6, 18.10 and Simos 12.1 ECUs. The platforms found in most modern TSI and TFSI engines across Audi, VW, Škoda and SEAT. LIVE DATA LOGGING Read ECU parameters directly in real time. Monitor boost pressure, injection timing, lambda, temperatures, torque and more at high sample rates over a Bluetooth connection. VEHICLE MANAGEMENT Keep multiple vehicles and their log sessions organized in one place. Switch between projects instantly. ECU IDENTIFICATION Read software versions, calibration IDs and hardware info straight from the control unit. LOG ANALYSIS Visualize recorded sessions with multi-channel graphs. Spot correlations between parameters without leaving the app. –– Built for enthusiasts, tuners and workshops who need more than a generic scan tool. Basic knowledge of ECU diagnostics is recommended. This app is for informational and diagnostic purposes only. Any modifications to vehicle systems are the sole responsibility of the user and must comply with local laws and regulations. –– Bluetooth OBD adapter required (Macchina A0 or DIY A0 clone https://github.com/Switchleg1/AMAleg)

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

Added optional GPS and accelerometer logging. Show peak torque and power in each logging session. Added wake lock while logging or in live view. Fixed Demo Mode edge case. Updated Log Viewer with pinch to zoom, scrolling, peak hp/torque.

Version 0.2

The developer, Tycho Sebastian Holzer, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

  • Provider
    • Tycho Sebastian Holzer
  • Size
    • 1.4 MB
  • Category
    • Utilities
  • Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
  • Languages
    • English
  • Age Rating
    4+
  • Copyright
    • © 2026 Holzer Consulting Tycho Holzer
  • Privacy Policy
  • Licence Agreement