# Ruler AR vs Ring Sizer+

The clearest difference is update cadence: Ruler AR at every 3 months against Ring Sizer+'s every 23 months. Ruler AR also leads on ratings volume (3.5K vs 12) and rating (4.3 vs 4.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ruler AR sells 3 in-app purchases, starting at $1.99 per month and Ring Sizer+ sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Ruler AR holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Ruler AR has 3.5K ratings behind it against 12, so its average is the more settled of the two.

Ruler AR ships an update every 3 months, Ring Sizer+ every 23 months. The most recent releases landed on September 24, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Ruler AR | Ring Sizer+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3.5K ratings)](https://appshunter.io/ios/app/ruler-ar-measuring-tape-cam/id1279285953/reviews)** | [4.0 (12 ratings)](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641/reviews) |
| Number of ratings | **3.5K** | 12 |
| Positive reviews | 27.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 23 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 22 MB | 6 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vladislav Kovalski](https://appshunter.io/developer/1657516901) | [Arda Sen](https://appshunter.io/developer/1670665250) |

## What reviewers say

### Ruler AR

[App page](https://appshunter.io/ios/app/ruler-ar-measuring-tape-cam/id1279285953)

Transform your phone into a powerful measuring tool using augmented reality. Accurately measure length, height, and area of objects simply by pointing your camera. Includes a bubble level for precise surface alignment.

**Highlights:** Measure length, height, and area, Augmented reality technology, Bubble level tool, Multiple measurement units (inches, meters, cm), Save measurements to camera roll, Touch Mode for precise measurements

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ruler Pro Features | $1.99 | per month |
| Ruler Pro Access | $5.99 | per 7 days |
| Remove Ads | $0.99 | one-time |


### Ring Sizer+

[App page](https://appshunter.io/ios/app/ring-sizer-plus/id6449985641)

Effortlessly measure rings, jewelry, and other objects with precision using visual cues and a digital ruler. Supports global sizing standards and stores measurement history for convenience. Ensures a perfect fit for your precious items.

**Highlights:** Seamless measurement experience, Versatile digital ruler, Global size support, Perfect fit guarantee, Measurement history

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Yearly Subscription | $19.99 | per year |
| Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Ruler AR free?

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

### Is Ring Sizer+ free?

Ring Sizer+ is free to download, with in-app purchases available.

### Which has better reviews, Ruler AR or Ring Sizer+?

Ruler AR is rated higher. Ruler AR averages 4.3 out of 5 from 3.5K ratings, while Ring Sizer+ averages 4.0 from 12 ratings.

### Do Ruler AR or Ring Sizer+ have ads?

Both Ruler AR and Ring Sizer+ show ads.

### Which is updated more often, Ruler AR or Ring Sizer+?

Ruler AR ships an update every 3 months, and Ring Sizer+ every 23 months. Most recently, Ruler AR was updated on September 24, 2026 and Ring Sizer+ on September 3, 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.*