# Pocket Rulers vs Ruler

The clearest difference is rating: Ruler at 4.2 against Pocket Rulers's 1.0. Ruler also leads on ratings volume (419 vs 1). Pocket Rulers's advantage is ads (none vs shown) and review sentiment (41% vs 15%). On price, in-app purchases and device support 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 419 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 41% of Pocket Rulers's written reviews are positive against 15% of Ruler's, so the app with the better star average is not the one people write more warmly about.

Pocket Rulers ships an update every 5 months, Ruler every 14 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Pocket Rulers | Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/pocket-rulers/id436696045/reviews) | **[4.2 (419 ratings)](https://appshunter.io/ios/app/ruler/id1555214809/reviews)** |
| Number of ratings | 1 | **419** |
| Positive reviews | **40.9% of reviews** | 15.2% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 14 months |
| Monetization | **Free** | Ad-supported |
| Size | 18 MB | 6 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Keiichi Okamoto](https://appshunter.io/developer/431066685) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## What reviewers say

### Pocket Rulers

[App page](https://appshunter.io/ios/app/pocket-rulers/id436696045)

This utility app offers digital ruler and protractor tools for iPhone, iPod Touch, and iPad. It supports various units like cm, inches, and sun for the ruler, and degrees and radians for the protractor. Users can customize backgrounds and colors.

**Highlights:** Digital ruler and protractor, Supports cm, inch, and sun units, Supports degree and radian measurements, Moveable ruler via tap and drag, Switch between picture and camera backgrounds, Customizable background pictures from album, Adjustable ruler and protractor colors

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

**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 Pocket Rulers free?

Pocket Rulers 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, Pocket Rulers or Ruler?

Ruler is rated higher. Pocket Rulers averages 1.0 out of 5 from 1 ratings, while Ruler averages 4.2 from 419 ratings.

### Do Pocket Rulers or Ruler have ads?

Ruler shows ads; Pocket Rulers does not.

### Which is updated more often, Pocket Rulers or Ruler?

Pocket Rulers ships an update every 5 months, and Ruler every 14 months. Most recently, Pocket Rulers was updated on October 23, 2026 and Ruler on October 27, 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.*