FourStroke OBD2 Car Scanner
OBD Bluetooth & Wifi Toolkit
FreeOffers In-App Purchases
8.1.0for iPhone, iPad
Age Rating
FourStroke OBD2 Car Scanner Screenshots
About FourStroke OBD2 Car Scanner
FourStroke is a powerful tool that analyzes and displays real-time vehicle sensors and data through your vehicle's OBD2 port, a port standard on most vehicles across the world. Use of this app requires a third-party OBD2 Wifi or Bluetooth BLE Adapter. Our app is FREE to pull and clear engine codes along with most other functionality!
FourStroke can convert your device into a heads-up display of just about every sensor your car supports, without needing expensive gauges. Sensors include RPM, coolant temperature, vehicle speed, air flow, O2 sensor data, and more (sensor support varies based on vehicle).
Quickly diagnose a check engine light (CEL) by pulling up exactly what error codes are present. FourStroke automatically turns the code into a readable description. Your vehicle also may store 'Freeze Frames' that detail what sensor data was present when the CEL first occurred; FourStroke can display this information for you.
In-app purchases are available for reading more advanced sensors as well as a performance upgrade for fully unlocking our dynamometer (horsepower & torque reader) and a 1/4 mile analyzer.
DISCLAIMER: This app requires a third-party OBD2 adapter. This app does not support ABS codes or proprietary commands.
FourStroke can convert your device into a heads-up display of just about every sensor your car supports, without needing expensive gauges. Sensors include RPM, coolant temperature, vehicle speed, air flow, O2 sensor data, and more (sensor support varies based on vehicle).
Quickly diagnose a check engine light (CEL) by pulling up exactly what error codes are present. FourStroke automatically turns the code into a readable description. Your vehicle also may store 'Freeze Frames' that detail what sensor data was present when the CEL first occurred; FourStroke can display this information for you.
In-app purchases are available for reading more advanced sensors as well as a performance upgrade for fully unlocking our dynamometer (horsepower & torque reader) and a 1/4 mile analyzer.
DISCLAIMER: This app requires a third-party OBD2 adapter. This app does not support ABS codes or proprietary commands.
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What's New in the Latest Version 8.1.0
Last updated on Oct 4, 2023
Old Versions
- Improvements: Information sections revised
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Version History
8.1.0
Oct 4, 2023
- Improvements: Information sections revised
8.0.1
Sep 20, 2023
- Bug fix: Fixed issue preventing ability to select certain settings
8.0.0
Sep 5, 2023
- Addition: Added ability to customize gauge colors
7.4.0
Aug 22, 2023
- Improvements: Stability enhancements and minor bug fixes surrounding charting
7.3.0
Feb 24, 2022
- Addition: LELink OBDII BLE adapter compatibility
7.2.1
Jan 26, 2022
- Bug fix: Fixed fatal crash when initializing ECU and having unexpected responses for supported sensors
- Bug fix: Prevented crashing on exporting CSVs when no email client available
- Bug fix: Prevented crashing on exporting CSVs when no email client available
7.2.0
Nov 10, 2021
- Addition: OBDLink CX support and auto-connect functionality
- Enhancement: Improved connection time for Bluetooth when not using auto-connect (auto-scan) setting
- Bug fix: Vehicle information screen sometimes would not show adapter name
- Enhancement: Improved connection time for Bluetooth when not using auto-connect (auto-scan) setting
- Bug fix: Vehicle information screen sometimes would not show adapter name
7.1.1
Nov 9, 2021
- Bug fix: Bluetooth stability improvements
- Bug fix: Fixed issue where reconnects would provide incorrect sensor support listings
- Bug fix: Fixed issue where reconnects would provide incorrect sensor support listings
7.1.0
Nov 3, 2021
- Addition: FlyRoadUp OBDII BLE adapter compatibility
- Addition: Reworked Bluetooth connection screen to allow for selection of device
- Addition: Vehicle diagnostic screen shows all supported vehicle sensors
- Addition: Improved general ELM adapter support
- Bug fix: Dynamometer graph displaying no results fixed in cases where RPM started from 0
- Bug fix: Equivalence ratio now displays corresponding unit symbol
- Bug fix: Validation improvements for datalogging
- Bug fix: iPad crash fix when opening menu on performance screens
- Bug fix: Improved edge-case where adapter would not be reconnected to after losing connection
- Various minor UI improvements
- Addition: Reworked Bluetooth connection screen to allow for selection of device
- Addition: Vehicle diagnostic screen shows all supported vehicle sensors
- Addition: Improved general ELM adapter support
- Bug fix: Dynamometer graph displaying no results fixed in cases where RPM started from 0
- Bug fix: Equivalence ratio now displays corresponding unit symbol
- Bug fix: Validation improvements for datalogging
- Bug fix: iPad crash fix when opening menu on performance screens
- Bug fix: Improved edge-case where adapter would not be reconnected to after losing connection
- Various minor UI improvements
7.0.0
Oct 25, 2021
- Added ability to graph sensors and be able to export data
6.4.0
Oct 19, 2021
- Added section under settings to allow selection of mix between metric and imperial units
- Dynometer and 1/4 mile results now displayed in configurable power and torque units according to settings
- Dynometer and 1/4 mile results now displayed in configurable power and torque units according to settings
6.3.2
Oct 7, 2021
- iOS 15 navigation bar compatibility fixes
- Minor stability fixes
- Minor stability fixes
6.3.1
Sep 29, 2021
- Stability improvement for "Emissions Readiness" diagnostics screen
6.3.0
Sep 28, 2021
- iPad Support
6.2.1
Sep 27, 2021
- Stability improvements for "diagnostic codes" screen
6.2.0
Sep 25, 2021
- VGate Bluetooth adapter support
- Minor image layout adjustments for larger screens on Diagnostics page
- Minor image layout adjustments for larger screens on Diagnostics page
6.1.1
Sep 21, 2021
- Various crash fixes implemented due to memory management issues
- Data requests now resume automatically if Wifi drops temporarily
- Fixed edge case where leaving dashboard could slow down future requests
- Data requests now resume automatically if Wifi drops temporarily
- Fixed edge case where leaving dashboard could slow down future requests
6.1.0
Sep 15, 2021
- Fixed potential crash on vehicle information screen based on certain ECU names
- Improved crash reporting
- Improved crash reporting
6.0.0
Sep 13, 2021
- Added Bluetooth support for Veepeak adapters!
- Vehicle Diagnotic screen now shows only tests available to the vehicle.
- Vehicle Diagnotic screen now shows proper tests due to regression
- Vehicle Diagnotic screen now shows only tests available to the vehicle.
- Vehicle Diagnotic screen now shows proper tests due to regression
5.1.0
Sep 10, 2021
Added support and adjustments for newer phones to ensure gauges render evenly
5.0.2
Sep 3, 2021
Emissions Readiness: Minor bug fixes
5.0.1
Apr 20, 2020
=== Version 5.0.1 ===
Fix for error reporting added
=== Version 5.0.0 ===
Massive code restructure in order to facilitate upcoming enhancements
Bug Fixes
- Fixed issue with gauges not reinitializing correctly on dashboard
Fix for error reporting added
=== Version 5.0.0 ===
Massive code restructure in order to facilitate upcoming enhancements
Bug Fixes
- Fixed issue with gauges not reinitializing correctly on dashboard
5.0.0
Apr 11, 2020
=== Version 5.0.0 ===
Massive code restructure in order to facilitate upcoming enhancements
Bug Fixes
- Fixed issue with gauges not reinitializing correctly on dashboard
- Gauge layout fixes across different devices
Massive code restructure in order to facilitate upcoming enhancements
Bug Fixes
- Fixed issue with gauges not reinitializing correctly on dashboard
- Gauge layout fixes across different devices
4.0.2
Apr 12, 2018
=== Version 4.0.2 ===
Bug Fixes
- Fixed unselectable Gauge on 6 gauge dashboard
=== Version 4.0.1 ===
Bug Fixes
- Users unable to initiate purchases
=== Version 4.0.0 ===
Major Enhancements
-Rewritten UI to allow for landscape view
=== Version 3.1.0 ===
Minor Enhancements
-Added new sensor 'Intake Manifold Boost Pressure'
-Added clarification on App's abilities for code clearing
-Simulated ECU now shown as different icon on home screen
-Added additional gauge screens
Bug Fixes
-Iphone X home bar no longer covers dyno results
-Table headers no longer become hard to read after scrolling
=== Version 3.0.1 ===
Major Enhancements
Performance section added
-Dynanometer
-1/4 Mile Run
iPhone X Compatibility
Minor Enhancements
Added option to allow forcing English language
Error code detail screen links to third party website for further details
Added code lookup feature
Gauge value overrides now allow negative numbers
Bug Fixes
- Fixed unselectable Gauge on 6 gauge dashboard
=== Version 4.0.1 ===
Bug Fixes
- Users unable to initiate purchases
=== Version 4.0.0 ===
Major Enhancements
-Rewritten UI to allow for landscape view
=== Version 3.1.0 ===
Minor Enhancements
-Added new sensor 'Intake Manifold Boost Pressure'
-Added clarification on App's abilities for code clearing
-Simulated ECU now shown as different icon on home screen
-Added additional gauge screens
Bug Fixes
-Iphone X home bar no longer covers dyno results
-Table headers no longer become hard to read after scrolling
=== Version 3.0.1 ===
Major Enhancements
Performance section added
-Dynanometer
-1/4 Mile Run
iPhone X Compatibility
Minor Enhancements
Added option to allow forcing English language
Error code detail screen links to third party website for further details
Added code lookup feature
Gauge value overrides now allow negative numbers
4.0.1
Mar 30, 2018
=== Version 4.0.1 ===
Fixed unresponsive purchase button
=== Version 4.0.0 ===
Major Enhancements
-Rewritten UI to allow for landscape view
=== Version 3.1.0 ===
Minor Enhancements
-Added new sensor 'Intake Manifold Boost Pressure'
-Added clarification on App's abilities for code clearing
-Simulated ECU now shown as different icon on home screen
-Added additional gauge screens
Bug Fixes
-Iphone X home bar no longer covers dyno results
-Table headers no longer become hard to read after scrolling
=== Version 3.0.1 ===
Major Enhancements
Performance section added
-Dynanometer
-1/4 Mile Run
iPhone X Compatibility
Minor Enhancements
Added option to allow forcing English language
Error code detail screen links to third party website for further details
Added code lookup feature
Gauge value overrides now allow negative numbers
Fixed unresponsive purchase button
=== Version 4.0.0 ===
Major Enhancements
-Rewritten UI to allow for landscape view
=== Version 3.1.0 ===
Minor Enhancements
-Added new sensor 'Intake Manifold Boost Pressure'
-Added clarification on App's abilities for code clearing
-Simulated ECU now shown as different icon on home screen
-Added additional gauge screens
Bug Fixes
-Iphone X home bar no longer covers dyno results
-Table headers no longer become hard to read after scrolling
=== Version 3.0.1 ===
Major Enhancements
Performance section added
-Dynanometer
-1/4 Mile Run
iPhone X Compatibility
Minor Enhancements
Added option to allow forcing English language
Error code detail screen links to third party website for further details
Added code lookup feature
Gauge value overrides now allow negative numbers
FourStroke OBD2 Car Scanner FAQ
Click here to learn how to download FourStroke OBD2 Car Scanner in restricted country or region.
Check the following list to see the minimum requirements of FourStroke OBD2 Car Scanner.
iPhone
Requires iOS 16.0 or later.
iPad
Requires iPadOS 16.0 or later.
FourStroke OBD2 Car Scanner supports English, Russian
FourStroke OBD2 Car Scanner contains in-app purchases. Please check the pricing plan as below:
Sensor Upgrade Package
$3.99
Performance Upgrade
$2.99
