# Ruler vs American Scale

Ruler and American Scale both sit at 3.7 stars, but that hides the real split: 63% of Ruler's written reviews are positive against 0% of American Scale's. American Scale's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 3.7 for Ruler against 3.7 for American Scale. Both are backed by a comparable volume of ratings — 3 and 6 respectively. Written reviews are what separate them: 63% of Ruler's written reviews are positive against 0% of American Scale's.

Ruler ships an update every 5 months, American Scale every 4 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ruler | American Scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707/reviews) | [3.7 (6 ratings)](https://appshunter.io/ios/app/american-scale/id1462322814/reviews) |
| Number of ratings | 3 | **6** |
| Positive reviews | **63.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 1 MB |
| Requires iOS | 15.0 | **13.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [mitsunori oishi](https://appshunter.io/developer/905649994) | [American Scale CO.](https://appshunter.io/developer/1462322813) |

## 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 |


### American Scale

[App page](https://appshunter.io/ios/app/american-scale/id1462322814)

This application connects to a compatible weigh-in scale to display weight readings remotely. It automatically detects nearby scales, allowing users to select and switch between them. The app supports both pounds and kilograms and includes a feature to zero the scale.

**Highlights:** Remote weight reading, Automatic scale recognition, Switch between multiple scales, Display weight in lbs and Kg, Zero scale function

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is American Scale free?

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

### Which has better reviews, Ruler or American Scale?

Ruler and American Scale are both rated 3.7 out of 5 on the App Store, from 3 and 6 ratings respectively.

### Do Ruler or American Scale have ads?

Ruler shows ads; American Scale does not.

### Which is updated more often, Ruler or American Scale?

Ruler ships an update every 5 months, and American Scale every 4 months. Most recently, Ruler was updated on November 1, 2026 and American Scale on November 3, 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.*