# Epic Ruler vs Ruler

The clearest difference is rating: Ruler at 3.5 against Epic Ruler's 1.0. Ruler also leads on review sentiment (40% vs 0%) and update cadence (every 3 weeks vs every 17 months). Epic Ruler's advantage is in-app purchases (none vs 4). On price, ads and device support there is nothing between them.

Both are free to download. Ruler sells 4 in-app purchases, starting at $4.99 per month. Epic Ruler asks for nothing beyond the download.

Ruler holds the better App Store score, 3.5 against 1.0. That said, the two scores are not equally well evidenced: Ruler has 79 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 40% of Ruler's.

Epic Ruler ships an update every 17 months, Ruler every 3 weeks. The most recent releases landed on October 2, 2026 and October 24, 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) | **[3.5 (79 ratings)](https://appshunter.io/ios/app/ruler-cm-mm-inches/id1022857549/reviews)** |
| Number of ratings | 4 | **79** |
| Positive reviews | 0.0% of reviews | **40.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 11 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chih-Hao Chen](https://appshunter.io/developer/618207820) | [Noadit, Inc.](https://appshunter.io/developer/1516754355) |

## 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-cm-mm-inches/id1022857549)

Measure lengths, widths, and diagonals accurately using your phone. Switch between metric and imperial units, and utilize flexible starting points for precise measurements in any direction. Features auto-calibration for minimal error and a screen lock to preserve readings.

**Highlights:** Multi-mode measurement (CM, MM, Inches, Fractions), Flexible starting points, Full-direction measurement (horizontal, vertical, diagonal), Auto-calibration for accuracy, Screen lock for preserving readings, Ad-free VIP option

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP | $4.99 | per month |
| Sponsor | $4.99 | one-time |
| Sponsor | $19.99 | one-time |
| Sponsor | $99.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 📏 Accurate measurements (for some)
- 💡 Useful for small objects
- ✨ Clean interface
- 🚀 Fluid performance

**What reviewers complain about**

- 😠 Excessive and intrusive ads
- 🚫 Ads block measurements
- 🔊 Loud and shocking ads
- 💸 No option to pay for ad-free (or purchase lost)
- 📉 Inaccurate inch measurements (decimal vs. fractional)

**Reported bugs**

- Ads pop up constantly, making app unusable
- Ads overlay the ruler/measurements
- App crashes constantly
- Black screen issue
- Inaccurate measurements (especially inches)

**Requested features**

- Option to remove ads via one-time purchase
- Ability to calibrate the ruler
- Offset crosshairs to see numbers
- Fractional inch (1/8, 1/16) display option
- Option to hide ruler digits


## 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 in-app purchases available.

### 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 3.5 from 79 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 3 weeks. Most recently, Epic Ruler was updated on October 2, 2026 and Ruler on October 24, 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.*