# Kaliper vs CodeMaster4

The clearest difference is in-app purchases: CodeMaster4 at none against Kaliper's 1. CodeMaster4 also leads on ads (none vs shown) and update cadence (fortnightly vs every 8 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Kaliper sells 1 one-off in-app purchase. CodeMaster4 asks for nothing beyond the download.

Kaliper ships an update every 8 months, CodeMaster4 fortnightly. The most recent releases landed on August 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Kaliper | CodeMaster4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (8 ratings)](https://appshunter.io/ios/app/kaliper/id1469528726/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 202 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Redt Inc.](https://appshunter.io/developer/1535567812) |

## What reviewers say

### Kaliper

[App page](https://appshunter.io/ios/app/kaliper/id1469528726)

Measure key cuts accurately using your device's camera. This utility helps decode keys when a physical caliper is unavailable or difficult to read. Offers predefined systems and custom measurement options for various lock types.

**Highlights:** Measure key cuts with device camera, Predefined lock systems, Custom key measurement input, Ad-free upgrade option, Supports various lock brands

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kaliper Full Version | $1.99 | one-time |


### CodeMaster4

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Kaliper free?

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

### Is CodeMaster4 free?

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

### Do Kaliper or CodeMaster4 have ads?

Kaliper shows ads; CodeMaster4 does not.

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

Kaliper ships an update every 8 months, and CodeMaster4 fortnightly. Most recently, Kaliper was updated on August 25, 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.*