# Ruler® vs Rul3r

The clearest difference is ads: Ruler® at none against Rul3r's shown. Ruler® also leads on ratings volume (35K vs 1K). Rul3r's advantage is review sentiment (45% vs 22%) and rating (4.5 vs 4.3). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ruler® sells 2 in-app purchases, starting at $1.99 per 7 days and Rul3r sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rul3r holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Ruler® has 35K ratings behind it against 1K, so its average is the more settled of the two. Written reviews point the same way: 22% of Ruler®'s written reviews are positive against 45% of Rul3r's.

Ruler® ships an update every 6 weeks, Rul3r every 2 months. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Ruler® | Rul3r |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (35K ratings)](https://appshunter.io/ios/app/ruler/id623207505/reviews) | **[4.5 (1K ratings)](https://appshunter.io/ios/app/rul3r/id997746189/reviews)** |
| Number of ratings | **35K** | 1K |
| Positive reviews | 21.9% of reviews | **44.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 25 MB | 6 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tue Nguyen Minh](https://appshunter.io/developer/434811167) | [YOYASOFT LLC](https://appshunter.io/developer/325345561) |

## What reviewers say

### Ruler®

[App page](https://appshunter.io/ios/app/ruler/id623207505)

This app provides a versatile toolkit for all your measurement needs. It includes a classic ruler, a tape measure, and a camera ruler for precise measurements. Easily switch between units and document your findings by adding measurements directly to photos.

**Highlights:** Classic ruler and tape measure, Camera ruler mode, Photo measures mode, Dual unit support (inches/cm), Precision sliders for small objects, Elegant and user-friendly interface

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruler Pro (Weekly) | $1.99 | per 7 days |
| Pro Features | $1.99 | one-time |

**What reviewers like**

- 🚀 Accurate measurements
- 👍 Easy to use
- 🔍 Convenient for small items
- 📏 Useful ruler tool

**What reviewers complain about**

- 💰 Paywall for basic features
- ⏱️ Limited free usage time
- 🔍 Inaccurate for larger objects
- 🙅‍♀️ Aggressive monetization tactics

**Reported bugs**

- Inconsistent measurements
- Compatibility issues with newer devices

**Requested features**

- Ability to switch between metric and imperial units without paying
- Improved accuracy for larger measurements
- Removal of time limits on free usage


### 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 |


## Frequently asked questions

### Is Ruler® free?

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

### Is Rul3r free?

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

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

Rul3r is rated higher. Ruler® averages 4.3 out of 5 from 35K ratings, while Rul3r averages 4.5 from 1K ratings.

### Do Ruler® or Rul3r have ads?

Rul3r shows ads; Ruler® does not.

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

Ruler® ships an update every 6 weeks, and Rul3r every 2 months. Most recently, Ruler® was updated on September 25, 2026 and Rul3r on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*