# OBD Diagnostics vs CarScan

The clearest difference is ads: CarScan at none against OBD Diagnostics's shown. CarScan also leads on update cadence (every 10 days vs monthly) and iOS requirement (16.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. OBD Diagnostics sells 1 one-off in-app purchase and CarScan sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

OBD Diagnostics ships an update monthly, CarScan every 10 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | OBD Diagnostics | CarScan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 10 days** |
| Size | 23 MB | 7 MB |
| Requires iOS | 26.2 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EJSmith](https://appshunter.io/developer/305393602) | [Vitali Zeliankevich](https://appshunter.io/developer/1771606521) |

## What reviewers say

### OBD Diagnostics

[App page](https://appshunter.io/ios/app/obd-diagnostics/id6759762253)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### CarScan

[App page](https://appshunter.io/ios/app/carscan/id6807683950)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One month access | $5.99 | per month |
| One year access | $14.99 | per year |
| Full access forever | $29.99 | one-time |


## Frequently asked questions

### Is OBD Diagnostics free?

OBD Diagnostics is free to download, with in-app purchases available.

### Is CarScan free?

CarScan is free to download, with in-app purchases available.

### Do OBD Diagnostics or CarScan have ads?

OBD Diagnostics shows ads; CarScan does not.

### Which is updated more often, OBD Diagnostics or CarScan?

OBD Diagnostics ships an update monthly, and CarScan every 10 days. Most recently, OBD Diagnostics was updated on October 31, 2026 and CarScan on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*