# Ratchet AI vs Auto AI Diagnostics

The clearest difference is in-app purchases: Auto AI Diagnostics at none against Ratchet AI's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Ratchet AI sells 4 in-app purchases, starting at $12.99 per month. Auto AI Diagnostics asks for nothing beyond the download.

Ratchet AI ships an update every 10 days, Auto AI Diagnostics weekly. Both last shipped on November 5, 2026.

## The numbers

| Metric | Ratchet AI | Auto AI Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Size | 50 MB | 84 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mark Tse](https://appshunter.io/developer/1895671804) | [Matthew Sheaffer](https://appshunter.io/developer/6772241801) |

## What reviewers say

### Ratchet AI

[App page](https://appshunter.io/ios/app/ratchet-ai/id6764174391)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ratchet Pro Monthly | $12.99 | per month |
| Ratchet Unlimited Monthly | $19.99 | per month |
| Ratchet Pro Annual | $89.99 | per year |
| Ratchet Unlimited Annual | $149.99 | per year |


### 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 Ratchet AI free?

Ratchet AI 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 Ratchet AI or Auto AI Diagnostics have ads?

Neither Ratchet AI nor Auto AI Diagnostics shows ads.

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

Ratchet AI ships an update every 10 days, and Auto AI Diagnostics weekly. Most recently, Ratchet AI was updated on November 5, 2026 and Auto AI Diagnostics on November 5, 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.*