# Key Genius vs CAR OBD

The clearest difference is rating: CAR OBD at 5.0 against Key Genius's 2.5. Key Genius's advantage is in-app purchases (none vs 5) and review sentiment (33% vs 0%). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. CAR OBD sells 5 one-off in-app purchases. Key Genius asks for nothing beyond the download.

CAR OBD holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Key Genius has 63 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 33% of Key Genius's written reviews are positive against 0% of CAR OBD's, so the app with the better star average is not the one people write more warmly about.

Key Genius ships an update every 3 months, CAR OBD every 6 weeks. The most recent releases landed on October 15, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Key Genius | CAR OBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (63 ratings)](https://appshunter.io/ios/app/key-genius/id1562850882/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/car-obd/id6470771313/reviews)** |
| Number of ratings | **63** | 1 |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 161 MB | 15 MB |
| Requires iOS | **10.0** | 13 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Autel Intelligent Technology Co., Ltd.](https://appshunter.io/developer/770747094) | [Dongguan Shendu Research Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1827187525) |

## What reviewers say

### Key Genius

[App page](https://appshunter.io/ios/app/key-genius/id1562850882)

Easily program new car keys at home using your smartphone. Compatible with thousands of vehicle models, this app guides you through the DIY installation process after receiving a pre-cut key.

**Highlights:** DIY car key pairing, Compatible with thousands of vehicles, Step-by-step phone instructions, Home installation, Pre-cut key delivery

**Features:** macOS Compatibility

**In-app purchases:** none


### CAR OBD

[App page](https://appshunter.io/ios/app/car-obd/id6470771313)

This utility app helps users manage car keys by facilitating the matching of existing keys and the addition of new ones. It supports both single key additions and batch processing for multiple keys.

**Highlights:** Match car keys, Add single car key, Batch add multiple keys, Supports iPhone and iPad

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OBD number recharge One | $3.00 | one-time |
| OBD number recharge Two | $6.00 | one-time |
| OBD number recharge three | $9.00 | one-time |
| OBD number recharge four | $12.00 | one-time |
| OBD number recharge five | $15.00 | one-time |


## Frequently asked questions

### Is Key Genius free?

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

### Is CAR OBD free?

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

### Which has better reviews, Key Genius or CAR OBD?

CAR OBD is rated higher. Key Genius averages 2.5 out of 5 from 63 ratings, while CAR OBD averages 5.0 from 1 ratings.

### Do Key Genius or CAR OBD have ads?

Neither Key Genius nor CAR OBD shows ads.

### Which is updated more often, Key Genius or CAR OBD?

Key Genius ships an update every 3 months, and CAR OBD every 6 weeks. Most recently, Key Genius was updated on October 15, 2026 and CAR OBD on September 16, 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.*