# Ruler vs ServoSizer

The clearest difference is rating: ServoSizer at 5.0 against Ruler's 3.7. ServoSizer also leads on in-app purchases (none vs 1) and ads (none vs shown). Ruler's advantage is ratings volume (3 vs 1). 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. ServoSizer asks for nothing beyond the download.

ServoSizer holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

## The numbers

| Metric | Ruler | ServoSizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/servosizer/id6755742539/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 29 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [mitsunori oishi](https://appshunter.io/developer/905649994) | [Kevin Schomaker](https://appshunter.io/developer/1855943316) |

## 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 |


### ServoSizer

[App page](https://appshunter.io/ios/app/servosizer/id6755742539)

This application assists users in calculating and determining the appropriate size for servo motors. It provides essential data for engineering and design projects.

**Highlights:** Servo motor sizing, Calculation tool, Engineering data, Design assistance

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is ServoSizer free?

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

### Which has better reviews, Ruler or ServoSizer?

ServoSizer is rated higher. Ruler averages 3.7 out of 5 from 3 ratings, while ServoSizer averages 5.0 from 1 ratings.

### Do Ruler or ServoSizer have ads?

Ruler shows ads; ServoSizer does not.

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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.*