Gretio
The Missing Pocket Scan Tool
Free · In‑App Purchases · Designed for iPad
The popular vehicle diagnostic tool is now on iOS!
Use Gretio with an OBDLINK MX+ to perform advanced diagnostic functions on your vehicle.
Analyze thousands of different data points at high speeds.
Look up diagnostic trouble codes for all modules including the Engine Control Module, Chassis Control Module, Body Control Module, Radio, and more.
Perform advanced service functions such as diesel particulate filter service regenerations, selective catalytic reduction tests, power relay tests, and even program some features.
Gretio is an advanced tool made for the DIY market. All procedures must be used in accordance with the vehicle's service manual or other OEM approved literature.
Gretio is made exclusively for General Motors vehicles. Additional models will be supported in the future.
* Fixes desync of purchases in some situations
* Dashboards can be renamed
* Fixes rare internal ANR/Crash.
* Added some glass effects to match iOS 26 themes
The developer, Surreal Development LLC, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Surreal Development LLC
- Size
- 36.5 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Gretio All Access $19.99
- Gretio RPO Pack 1 $29.99
- Gretio RPO Pack 2 $29.99
- RPO Pack 3 $29.99
- Copyright
- © 2025 Surreal Development LLC