# OBD Diagnostics vs Auto AI Diagnostics

The clearest difference is in-app purchases: Auto AI Diagnostics at none against OBD Diagnostics's 1. Auto AI Diagnostics also leads on ads (none vs shown) and update cadence (weekly vs monthly). On price and device support there is nothing between them.

Both are free to download. OBD Diagnostics sells 1 one-off in-app purchase. Auto AI Diagnostics asks for nothing beyond the download.

OBD Diagnostics ships an update monthly, Auto AI Diagnostics weekly. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | OBD Diagnostics | Auto AI Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Size | 23 MB | 84 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EJSmith](https://appshunter.io/developer/305393602) | [Matthew Sheaffer](https://appshunter.io/developer/6772241801) |

## 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 |


### Auto AI Diagnostics

[App page](https://appshunter.io/ios/app/auto-ai-diagnostics/id6772241799)

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

**In-app purchases:** none


## Frequently asked questions

### Is OBD Diagnostics free?

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

### Is Auto AI Diagnostics free?

Auto AI Diagnostics is free to download, with no in-app purchases.

### Do OBD Diagnostics or Auto AI Diagnostics have ads?

OBD Diagnostics shows ads; Auto AI Diagnostics does not.

### Which is updated more often, OBD Diagnostics or Auto AI Diagnostics?

OBD Diagnostics ships an update monthly, and Auto AI Diagnostics weekly. Most recently, OBD Diagnostics was updated on October 6, 2026 and Auto AI Diagnostics on October 12, 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.*