# Ruler vs ScaleAloha

The clearest difference is in-app purchases: ScaleAloha at none against Ruler's 1. ScaleAloha also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 5 months). Ruler's advantage is iOS requirement (15.0 vs 17.6). On price and device support there is nothing between them.

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

Ruler ships an update every 5 months, ScaleAloha every 6 weeks. The most recent releases landed on June 1, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Ruler | ScaleAloha |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 27 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [mitsunori oishi](https://appshunter.io/developer/905649994) | [Igor Forgac](https://appshunter.io/developer/1703282805) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707)

This app displays various measurement scales for length, including meters and inches. It allows users to set magnification ratios and reduced scales for different applications. Users can calibrate the ruler and adjust PPI settings for accurate measurements.

**Highlights:** Display various measurement scales, Set magnification ratios, Set reduced scales, Measure in meters and inches, Free mode for custom scales, Calibration for accuracy, PPI setting

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide Ads | $0.99 | one-time |


### ScaleAloha

[App page](https://appshunter.io/ios/app/scalealoha/id6754256877)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is ScaleAloha free?

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

### Do Ruler or ScaleAloha have ads?

Ruler shows ads; ScaleAloha does not.

### Which is updated more often, Ruler or ScaleAloha?

Ruler ships an update every 5 months, and ScaleAloha every 6 weeks. Most recently, Ruler was updated on June 1, 2026 and ScaleAloha on September 13, 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.*