# Epic Ruler vs Ruler

The clearest difference is rating: Ruler at 4.2 against Epic Ruler's 1.0. Ruler also leads on ratings volume (413 vs 4) and review sentiment (17% vs 0%). Epic Ruler's advantage is monetization model (free vs ad-supported). On price, update cadence, 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.

Ruler holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: Ruler has 413 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of Epic Ruler's written reviews are positive against 17% of Ruler's.

Epic Ruler ships an update every 17 months, Ruler every 14 months. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Epic Ruler | Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (4 ratings)](https://appshunter.io/ios/app/epic-ruler/id982728131/reviews) | **[4.2 (413 ratings)](https://appshunter.io/ios/app/ruler/id1555214809/reviews)** |
| Number of ratings | 4 | **413** |
| Positive reviews | 0.0% of reviews | **16.7% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 14 months** |
| Monetization | **Free** | Ad-supported |
| Size | 11 MB | 6 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chih-Hao Chen](https://appshunter.io/developer/618207820) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## 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


### Ruler

[App page](https://appshunter.io/ios/app/ruler/id1555214809)

Measure objects and distances with an on-screen ruler and augmented reality. Supports inches and centimeters, with features for linear sizes, angles, area, volume, and more. Save your measurements for later use.

**Highlights:** On-screen ruler for small objects, Augmented Reality (AR) measuring, Measure linear sizes in cm/inches, Calculate angles, area, and volume, Save measurements, Generate plan projections

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Basic caliper and spirit level included
- ✅ Option to opt-out of data selling/sharing
- 👌 Accurate measurements (Arabic review)

**What reviewers complain about**

- 📏 Inaccurate measurements
- 💥 Frequent app crashes
- 💸 Limited free functionality (5" limit)
- 🚫 Cannot switch to metric (cm)
- 🤷 Unclear AR mode usage

**Reported bugs**

- App crashes on iPhone 17 and iPad
- App crashes within 1 minute
- AR mode not functional
- Cannot switch to cm
- Measurements are out of scale

**Requested features**

- Fix crashing issues
- Enable switching to metric (cm)
- Improve AR mode usability
- Add save and print functionality
- Provide usage instructions


## Frequently asked questions

### Is Epic Ruler free?

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

### Is Ruler free?

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

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

Ruler is rated higher. Epic Ruler averages 1.0 out of 5 from 4 ratings, while Ruler averages 4.2 from 413 ratings.

### Do Epic Ruler or Ruler have ads?

Both Epic Ruler and Ruler show ads.

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

Epic Ruler ships an update every 17 months, and Ruler every 14 months. Most recently, Epic Ruler was updated on October 2, 2026 and Ruler on October 14, 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.*