# Ruler® vs Ruler

The clearest difference is in-app purchases: Ruler at none against Ruler®'s 2. Ruler also leads on iOS requirement (13.0 vs 15.0). Ruler®'s advantage is ads (none vs shown) and update cadence (every 2 months vs every 14 months). On price, rating, review sentiment and device support there is nothing between them.

Both are free to download. Ruler® sells 2 in-app purchases, starting at $1.99 per 7 days. Ruler asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Ruler® against 4.2 for Ruler. That said, the two scores are not equally well evidenced: Ruler® has 35K ratings behind it against 413, so its average is the more settled of the two. Written reviews are what separate them: 22% of Ruler®'s written reviews are positive against 17% of Ruler's.

Ruler® ships an update every 2 months, Ruler every 14 months. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Ruler® | Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (35K ratings)](https://appshunter.io/ios/app/ruler/id623207505/reviews)** | [4.2 (413 ratings)](https://appshunter.io/ios/app/ruler/id1555214809/reviews) |
| Number of ratings | **35K** | 413 |
| Positive reviews | **21.9% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 22 MB | 6 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tue Nguyen Minh](https://appshunter.io/developer/434811167) | [Matrix Software Co.](https://appshunter.io/developer/1457004046) |

## 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


### 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 Ruler® free?

Ruler® 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, Ruler® or Ruler?

Ruler® is rated higher. Ruler® averages 4.3 out of 5 from 35K ratings, while Ruler averages 4.2 from 413 ratings.

### Do Ruler® or Ruler have ads?

Ruler shows ads; Ruler® does not.

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

Ruler® ships an update every 2 months, and Ruler every 14 months. Most recently, Ruler® was updated on October 12, 2026 and Ruler on October 10, 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.*