# AR Ruler vs Safe

The clearest difference is in-app purchases: Safe at none against AR Ruler's 10. Safe also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. AR Ruler sells 9 in-app purchases, starting at $4.99 per 7 days. Safe asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on November 8, 2026.

## The numbers

| Metric | AR Ruler | Safe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (977 ratings)](https://appshunter.io/ios/app/ar-ruler-digital-tape-measure/id1326773975/reviews)** | — |
| Number of ratings | **977** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 397 MB | 81 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Grymala sp. z o.o.](https://appshunter.io/developer/1686597408) | [Spruce Systems, Inc.](https://appshunter.io/developer/1569789914) |

## What reviewers say

### AR Ruler

[App page](https://appshunter.io/ios/app/ar-ruler-digital-tape-measure/id1326773975)

This app uses your phone's camera and AR technology to measure distances, lengths, angles, areas, and volumes of real-world objects. It offers a variety of tools for quick and precise measurements, suitable for both home and professional use.

**Highlights:** AR technology for precise measurements, Measure length, height, distance, and angles, Calculate area, volume, and perimeters, Tools for various shapes (rectangles, circles, cubes), Room measurement and wall adjustments, Home screen widgets for faster access

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AR Ruler Weekly | $4.99 | per 7 days |
| AR Ruler Weekly | $12.99 | per 7 days |
| Premium | $19.99 | per 7 days |
| AR Ruler Monthly | $19.99 | per month |
| AR Ruler Monthly | $19.99 | per month |
| Special Annual Subscription | $44.99 | per year |
| Annual AR Ruler | $69.99 | per year |
| Premium | $89.99 | per year |
| Annual AR Ruler | $89.99 | per year |

**What reviewers like**

- 🔍 Accurate measurements
- 📐 Useful for home projects
- 🔍 Precise for smaller objects
- 🔍 Helpful for architects

**What reviewers complain about**

- 💰 Expensive subscription model
- 🐛 Buggy and crashes frequently
- 📢 Aggressive advertising
- 🔍 Inaccurate for larger spaces
- 📚 Poor documentation and instructions

**Reported bugs**

- Freezes on launch
- Measurement errors
- Incompatibility with newer devices

**Requested features**

- Free trial version
- One-time purchase option
- Improved accuracy for larger areas


### Safe

[App page](https://appshunter.io/ios/app/safe-secure-document-vault/id6752493974)

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

**In-app purchases:** none


## Frequently asked questions

### Is AR Ruler free?

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

### Is Safe free?

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

### Do AR Ruler or Safe have ads?

AR Ruler shows ads; Safe does not.

### Which is updated more often, AR Ruler or Safe?

AR Ruler ships an update every 3 weeks, and Safe every 3 weeks. Most recently, AR Ruler was updated on November 8, 2026 and Safe on November 8, 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.*