# Ruler vs Masterbezel

The clearest difference is rating: Masterbezel at 4.0 against Ruler's 2.6. Masterbezel also leads on update cadence (every 4 days vs every 5 months) and review sentiment (71% vs 54%). Ruler's advantage is monetization model (free vs paid) and ratings volume (40 vs 1). On price, ads, 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.

Masterbezel holds the better App Store score, 4.0 against 2.6. That said, the two scores are not equally well evidenced: Ruler has 40 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 54% of Ruler's written reviews are positive against 71% of Masterbezel's.

Ruler ships an update every 5 months, Masterbezel every 4 days. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ruler | Masterbezel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (40 ratings)](https://appshunter.io/ios/app/ruler-accurate-ruler/id1084232739/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/masterbezel/id1572627111/reviews)** |
| Number of ratings | **40** | 1 |
| Positive reviews | 54.2% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 422 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [祥祎 刘](https://appshunter.io/developer/1071522659) | [Hangzhou Qin Technology Inc.](https://appshunter.io/developer/1231926599) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler-accurate-ruler/id1084232739)

This application provides a precise measurement tool by rendering according to your device's screen width specifications. It has been tested on a wide range of Apple devices to ensure accuracy for your measuring needs.

**Highlights:** Accurate screen-based rendering, Device-specific calibration, Wide device compatibility, Precise measurement tool

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

**In-app purchases:** none

**What reviewers like**

- ✅ Accurate measurements compared to physical rulers
- 👍 Simple and intuitive user interface
- 🎯 No intrusive ads or minimal advertising
- ⚡ Fast and responsive performance
- 🆓 Free to use application

**What reviewers complain about**

- 🐛 Blank white screen on newer devices
- ❌ No support for iPhone 12 and newer models
- ❌ No support for iPhone X and iPhone 11
- 🔄 App not updated in years
- ⚠️ Device compatibility detection issues

**Reported bugs**

- White/blank screen display on newer iOS versions
- App crashes and freezes on launch
- Ruler not rendering or displaying
- Toggle switches stuck in grey/disabled state
- Incorrect device identification (iPad size misidentification)

**Requested features**

- Support for iPhone 12, 13, 14, 15, 16 and newer models
- Millimeter measurement option
- Longer ruler display
- Fractional inches (1/16, 1/8) instead of decimal inches
- Support for newer iPad models


### Masterbezel

[App page](https://appshunter.io/ios/app/masterbezel/id1572627111)

Create professional-looking device mockups from your screenshots. This tool supports over 50 Apple device models and offers high-resolution output. It's simple to use, privacy-focused, and works offline.

**Highlights:** Create device mockups, Supports 50+ Apple devices, High-resolution output, Simple drag-and-drop interface, Offline functionality, Privacy-focused

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

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

### Is Masterbezel free?

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

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

Masterbezel is rated higher. Ruler averages 2.6 out of 5 from 40 ratings, while Masterbezel averages 4.0 from 1 ratings.

### Do Ruler or Masterbezel have ads?

Neither Ruler nor Masterbezel shows ads.

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

Ruler ships an update every 5 months, and Masterbezel every 4 days. Most recently, Ruler was updated on October 20, 2026 and Masterbezel 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.*