# AiRuler vs PrepperApp

The clearest difference is in-app purchases: AiRuler at none against PrepperApp's 1. AiRuler also leads on iOS requirement (11.0 vs 17.6). PrepperApp's advantage is update cadence (every 3 days vs fortnightly). On price, ads and device support there is nothing between them.

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

AiRuler ships an update fortnightly, PrepperApp every 3 days. The most recent releases landed on October 2, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | AiRuler | PrepperApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/airuler-ar-for-measurement/id1280843196/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free | — |
| Size | 18 MB | 61 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [BHI Technologies, Inc.](https://appshunter.io/developer/337011504) | [Michael Stuut](https://appshunter.io/developer/1886367246) |

## What reviewers say

### AiRuler

[App page](https://appshunter.io/ios/app/airuler-ar-for-measurement/id1280843196)

Visualize and measure objects in augmented reality using your device's camera. Accurately determine length, area, and angles of real-world items, and even draw directly onto your surroundings.

**Highlights:** Augmented reality visualization, Measure length, area, and angles, Draw on real-world objects, Accurate size determination, Object measurement via camera

**Features:** macOS Compatibility

**In-app purchases:** none


### PrepperApp

[App page](https://appshunter.io/ios/app/prepperapp/id6760813421)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PrepperApp Pro | $3.99 | one-time |


## Frequently asked questions

### Is AiRuler free?

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

### Is PrepperApp free?

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

### Do AiRuler or PrepperApp have ads?

Neither AiRuler nor PrepperApp shows ads.

### Which is updated more often, AiRuler or PrepperApp?

AiRuler ships an update fortnightly, and PrepperApp every 3 days. Most recently, AiRuler was updated on October 2, 2026 and PrepperApp on October 19, 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.*