ChkOBD OBD2 Analyzer
A good diagnostic of your car
About
Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.
What's New in ChkOBD OBD2 Analyzer
3.1.5
March 26, 2026
Security updates and patches
Subscription plans
Smog Check Assistant
1 month Subscription for Smog Check Assistant
In-App Purchases
$1.99
VIN Analyzer
Analyzes your Vehicle Identification Number
FAQ
What is ChkOBD?
ChkOBD is a utility app that connects your iPhone or iPad to your car via an ELM237 enabled OBDII Bluetooth adapter. It allows you to view engine values and access diagnostic information.
What basic engine values can I see for free with ChkOBD?
The free version of ChkOBD provides access to the most important basic engine values. You can view these in an intuitive and user-friendly interface.
What advanced features are available via in-app purchase in ChkOBD?
In-app purchases unlock advanced features such as an extended choice of sensors, a Smog Check Assistant to predict pass/fail status, a VIN Analyzer for car history, and an Error Decoder and Reset function for up to 4,000 error codes.
Does ChkOBD work with all cars?
ChkOBD is designed to read information from most cars sold in the USA after 2005. The app also includes a feature to check compatibility with your car and Bluetooth adapter before purchase.
How much does the Smog Check Assistant subscription cost?
The Smog Check Assistant subscription is priced at $4.99 per month (P1M). This feature helps you understand if your car will pass its next smog check and what might need fixing.
What is the rating of ChkOBD?
ChkOBD has a rating of 3.0 stars based on 4 user ratings. This indicates a mixed user reception.
Is ChkOBD available on Android?
Based on the provided data, ChkOBD is available for iPhone and iPad, suggesting it is an iOS-exclusive application.
How often is ChkOBD updated?
The latest version of ChkOBD is 3.1.5, which was last updated on March 26, 2026. This indicates a recent update or a future planned update.
