# KYDZ vs CodeMaster4

KYDZ and CodeMaster4 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KYDZ ships an update every 10 days, CodeMaster4 fortnightly. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | KYDZ | CodeMaster4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (7 ratings)](https://appshunter.io/ios/app/kydz/id1539109976/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | Free | — |
| Size | 403 MB | 202 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Wuxi Kaiyang Electronic Technology Co., Ltd.](https://appshunter.io/developer/1131154502) | [Redt Inc.](https://appshunter.io/developer/1535567812) |

## 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


### CodeMaster4

[App page](https://appshunter.io/ios/app/codemaster4/id6741621289)

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

**In-app purchases:** none


## Frequently asked questions

### Is KYDZ free?

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

### Is CodeMaster4 free?

CodeMaster4 is free to download, with no in-app purchases.

### Do KYDZ or CodeMaster4 have ads?

Neither KYDZ nor CodeMaster4 shows ads.

### Which is updated more often, KYDZ or CodeMaster4?

KYDZ ships an update every 10 days, and CodeMaster4 fortnightly. Most recently, KYDZ was updated on September 13, 2026 and CodeMaster4 on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*