# OBDChat vs OBD Ninja

The clearest difference is in-app purchases: OBDChat at none against OBD Ninja's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OBD Ninja sells 2 in-app purchases, starting at $4.99 per month. OBDChat asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OBDChat | OBD Ninja |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 4 MB | 48 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JIRI CHOMAT](https://appshunter.io/developer/1780274254) | [SKYPHIC STUDIO](https://appshunter.io/developer/1826683961) |

## What reviewers say

### OBDChat

[App page](https://appshunter.io/ios/app/obdchat-ai-car-scanner/id6752806088)

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

**In-app purchases:** none


### OBD Ninja

[App page](https://appshunter.io/ios/app/obd-ninja/id6758688512)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBD Ninja Premium | $4.99 | per month |
| OBD Ninja Premium | $39.99 | per year |


## Frequently asked questions

### Is OBDChat free?

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

### Is OBD Ninja free?

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

### Do OBDChat or OBD Ninja have ads?

Neither OBDChat nor OBD Ninja shows ads.

### Which is updated more often, OBDChat or OBD Ninja?

OBDChat ships an update weekly, and OBD Ninja weekly. Most recently, OBDChat was updated on October 25, 2026 and OBD Ninja on October 28, 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.*