# KYDZ vs CAR OBD

The clearest difference is review sentiment: KYDZ at 75% against CAR OBD's 0%. KYDZ also leads on in-app purchases (none vs 5) and update cadence (every 10 days vs every 6 weeks). CAR OBD's advantage is rating (5.0 vs 4.1) and iOS requirement (13 vs 15.0). On price, ads and device support there is nothing between them.

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

CAR OBD holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: KYDZ has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 75% of KYDZ'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.

KYDZ ships an update every 10 days, CAR OBD every 6 weeks. The most recent releases landed on September 13, 2026 and August 2, 2026 respectively.

## The numbers

| Metric | KYDZ | CAR OBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (7 ratings)](https://appshunter.io/ios/app/kydz/id1539109976/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/car-obd/id6470771313/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | **75.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 403 MB | 15 MB |
| Requires iOS | 15.0 | **13** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Wuxi Kaiyang Electronic Technology Co., Ltd.](https://appshunter.io/developer/1131154502) | [Dongguan Shendu Research Intelligent Technology Co., Ltd.](https://appshunter.io/developer/1827187525) |

## What reviewers say

### KYDZ

[App page](https://appshunter.io/ios/app/kydz/id1539109976)

This app connects automotive locksmiths to specialized hardware for generating car remotes, smart cards, and performing key profiling. It offers tools like a mechanical key ruler and VIN lookup for efficient locksmithing tasks.

**Highlights:** Car remote control generation, Smart card generation, Key profiling cutting, Mechanical key ruler, Vehicle frame number query, Bluetooth device connectivity

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

**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

**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 KYDZ free?

KYDZ 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, KYDZ or CAR OBD?

CAR OBD is rated higher. KYDZ averages 4.1 out of 5 from 7 ratings, while CAR OBD averages 5.0 from 1 ratings.

### Do KYDZ or CAR OBD have ads?

Neither KYDZ nor CAR OBD shows ads.

### Which is updated more often, KYDZ or CAR OBD?

KYDZ ships an update every 10 days, and CAR OBD every 6 weeks. Most recently, KYDZ was updated on September 13, 2026 and CAR OBD on August 2, 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.*