FourStroke is an iOS app designed to work together with your vehicle to give you real-time sensor and diagnostic data.

Our powerful application provides an in-depth view of your vehicle’s diagnostics system, and more.

Feature Rich

Our fresh app is full of features for you to explore. The app is always improving and evolving to make sure the features you need are there.


See all features

Visual Dashboard

Want the power of an expensive digital gauge without buying one? Our app transforms your phone into a plethora of gauges!


All Gauges


Having issues with your vehicle? Check any problem codes your vehicle may have. View historical data from when the issue was first seen.



Recent Updates

Check back for updates. Our app is always evolving and improving.
  • Veepeak Adapter Support


    As of release 6.x Fourstroke now supports Veepeak adapters. Please visit and use promo code OBDCHECK for 10% discount..
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  • FourStroke v2.0


    Version 2.0 was released on May 22, 2016 and includes the following updates: Enhancements: Added Digital Gauge Added Gauge Blank Multiple..
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  • FourStroke v1.3


    I am happy to announce the release of FourStroke 1.3 which adds many new sensors as well as general improvements..
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