# Rul3r vs Ruler

The clearest difference is in-app purchases: Ruler at none against Rul3r's 1. Ruler also leads on iOS requirement (13.0 vs 16.0). Rul3r's advantage is review sentiment (45% vs 17%) and update cadence (every 2 months vs every 14 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Rul3r sells 1 one-off in-app purchase. Ruler asks for nothing beyond the download.

Rul3r holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 1.1K and 413 respectively. Written reviews point the same way: 45% of Rul3r's written reviews are positive against 17% of Ruler's.

Rul3r ships an update every 2 months, Ruler every 14 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Rul3r | Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.1K ratings)](https://appshunter.io/ios/app/rul3r/id997746189/reviews)** | [4.2 (413 ratings)](https://appshunter.io/ios/app/ruler/id1555214809/reviews) |
| Number of ratings | **1.1K** | 413 |
| Positive reviews | **44.8% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 7 MB | 6 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YOYASOFT LLC](https://appshunter.io/developer/325345561) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## What reviewers say

### Rul3r

[App page](https://appshunter.io/ios/app/rul3r/id997746189)

This utility app provides a portable ruler for on-the-go measurements. It also includes a suite of additional tools like a protractor, spirit level, and various meters for diverse measurement needs.

**Highlights:** Portable ruler, Protractor, Spirit level, Altimeter, Decibel meter, Plumb line

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


### 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 Rul3r free?

Rul3r is free to download, with in-app purchases available.

### Is Ruler free?

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

### Which has better reviews, Rul3r or Ruler?

Rul3r is rated higher. Rul3r averages 4.4 out of 5 from 1.1K ratings, while Ruler averages 4.2 from 413 ratings.

### Do Rul3r or Ruler have ads?

Both Rul3r and Ruler show ads.

### Which is updated more often, Rul3r or Ruler?

Rul3r ships an update every 2 months, and Ruler every 14 months. Most recently, Rul3r was updated on October 17, 2026 and Ruler on October 18, 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.*