# Kaliper vs Layers World

The clearest difference is in-app purchases: Layers World at none against Kaliper's 1. Layers World also leads on ads (none vs shown) and update cadence (weekly vs every 8 months). Kaliper's advantage is iOS requirement (14.0 vs 17.0). On price and device support there is nothing between them.

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

Kaliper ships an update every 8 months, Layers World weekly. The most recent releases landed on October 10, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Kaliper | Layers World |
| --- | --- | --- |
| 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 | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 15 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [Gpixie Creative Labs LLC](https://appshunter.io/developer/1845430202) |

## 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 |


### Layers World

[App page](https://appshunter.io/ios/app/layers-world/id6790016671)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Kaliper free?

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

### Is Layers World free?

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

### Do Kaliper or Layers World have ads?

Kaliper shows ads; Layers World does not.

### Which is updated more often, Kaliper or Layers World?

Kaliper ships an update every 8 months, and Layers World weekly. Most recently, Kaliper was updated on October 10, 2026 and Layers World on October 21, 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.*