# Epic Ruler vs 定規(Ruler)

The clearest difference is review sentiment: 定規(Ruler) at 80% against Epic Ruler's 0%. 定規(Ruler) also leads on rating (5.0 vs 1.0) and update cadence (every 6 months vs every 17 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

定規(Ruler) holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 0% of Epic Ruler's written reviews are positive against 80% of 定規(Ruler)'s.

Epic Ruler ships an update every 17 months, 定規(Ruler) every 6 months. The most recent releases landed on August 11, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Epic Ruler | 定規(Ruler) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (4 ratings)](https://appshunter.io/ios/app/epic-ruler/id982728131/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ruler/id1166028258/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 6 months** |
| Monetization | Free | Free |
| Size | 11 MB | 3 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chih-Hao Chen](https://appshunter.io/developer/618207820) | [Mayumi Kato](https://appshunter.io/developer/705832872) |

## What reviewers say

### Epic Ruler

[App page](https://appshunter.io/ios/app/epic-ruler/id982728131)

Transform your smartphone into a portable measuring tool. Accurately measure lengths in both inches and centimeters directly from your device.

**Highlights:** Converts phone to ruler, Measures in inches, Measures in centimeters, Pocket-sized utility

**Features:** macOS Compatibility

**In-app purchases:** none


### 定規(Ruler)

[App page](https://appshunter.io/ios/app/ruler/id1166028258)

A straightforward measuring tool for iPhones, offering accurate measurements in both millimeters and inches. It's designed for ease of use and provides a cool, functional experience for everyday measuring needs.

**Highlights:** Accurate measurements, Millimeter display, Inch display, Supports all iPhone sizes, Simple interface

**In-app purchases:** none


## Frequently asked questions

### Is Epic Ruler free?

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

### Is 定規(Ruler) free?

定規(Ruler) is free to download, with no in-app purchases.

### Which has better reviews, Epic Ruler or 定規(Ruler)?

定規(Ruler) is rated higher. Epic Ruler averages 1.0 out of 5 from 4 ratings, while 定規(Ruler) averages 5.0 from 2 ratings.

### Do Epic Ruler or 定規(Ruler) have ads?

Neither Epic Ruler nor 定規(Ruler) shows ads.

### Which is updated more often, Epic Ruler or 定規(Ruler)?

Epic Ruler ships an update every 17 months, and 定規(Ruler) every 6 months. Most recently, Epic Ruler was updated on August 11, 2026 and 定規(Ruler) on June 1, 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.*