# DND vs Ratchet AI

The clearest difference is in-app purchases: DND 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. DND asks for nothing beyond the download.

DND ships an update every 8 days, Ratchet AI every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | DND | Ratchet AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dnd/id6451104638/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 10 days |
| Monetization | Free | — |
| Size | 339 MB | 50 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MATL TECH INC.](https://appshunter.io/developer/1735263917) | [Mark Tse](https://appshunter.io/developer/1895671804) |

## What reviewers say

### DND

[App page](https://appshunter.io/ios/app/dnd/id6451104638)

This tool helps you understand your vehicle's health and diagnose issues. It provides comprehensive diagnostic services, maintenance guidance, and real-time sensor data monitoring, making car care accessible even for beginners.

**Highlights:** OBD functionality, Enhanced diagnosis, Vehicle maintenance guidance, Locate malfunction causes, AI services, Abnormal warnings, Real-time sensor data monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is DND free?

DND is free to download, with no in-app purchases.

### Is Ratchet AI free?

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

### Do DND or Ratchet AI have ads?

Neither DND nor Ratchet AI shows ads.

### Which is updated more often, DND or Ratchet AI?

DND ships an update every 8 days, and Ratchet AI every 10 days. Most recently, DND was updated on October 24, 2026 and Ratchet AI on October 24, 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.*