# Ruler vs OneOrg

The clearest difference is in-app purchases: OneOrg at none against Ruler's 1. OneOrg also leads on ads (none vs shown) and update cadence (every 11 days vs every 5 months). On price, device support and iOS requirement there is nothing between them.

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

Ruler ships an update every 5 months, OneOrg every 11 days. The most recent releases landed on June 1, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Ruler | OneOrg |
| --- | --- | --- |
| 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 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 33 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [mitsunori oishi](https://appshunter.io/developer/905649994) | [Originbluy Private Limited](https://appshunter.io/developer/1758286331) |

## 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 |


### OneOrg

[App page](https://appshunter.io/ios/app/oneorg/id6748949836)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is OneOrg free?

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

### Do Ruler or OneOrg have ads?

Ruler shows ads; OneOrg does not.

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

Ruler ships an update every 5 months, and OneOrg every 11 days. Most recently, Ruler was updated on June 1, 2026 and OneOrg on September 8, 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.*