# Ring Sizer vs Caliper&Ruler

The clearest difference is rating: Caliper&Ruler at 5.0 against Ring Sizer's 4.7. Ring Sizer's advantage is ratings volume (50 vs 1) and iOS requirement (14.0 vs 18.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ring Sizer sells 4 in-app purchases, starting at $4.99 per 7 days and Caliper&Ruler sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Caliper&Ruler holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ring Sizer has 50 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Ring Sizer | Caliper&Ruler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (50 ratings)](https://appshunter.io/ios/app/ring-sizer-ar-ruler-and-table/id6473256428/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caliper-and-ruler/id6749051381/reviews)** |
| Number of ratings | **50** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 5 MB |
| Requires iOS | **14.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Ivan Frolov](https://appshunter.io/developer/1616814701) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ar-ruler-and-table/id6473256428)

Accurately determine your ring size using your phone's camera and screen. Offers four easy methods, including AR measurement and on-screen guides. Includes a comprehensive size chart for multiple regional standards.

**Highlights:** AR camera measurement, Ring-on-screen diameter measurement, Finger-on-screen slider adjustment, In-app ruler for direct measurement, Multi-regional size chart (USA, AU/GB, EU/ISO, JP/CH), User-friendly interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer Weekly Trial Promo | $4.99 | per 7 days |
| Ring Sizer Pro Weekly | $4.99 | per 7 days |
| Ring Sizer Year Trial Promo | $39.99 | per year |
| Ring Sizer Pro Year | $39.99 | per year |


### Caliper&Ruler

[App page](https://appshunter.io/ios/app/caliper-and-ruler/id6749051381)

Transform your device into a precise digital caliper for measuring objects in inches and millimeters. Features intuitive drag-and-measure functionality and accurate screen calibration using common items.

**Highlights:** Dual measurement units (inches/millimeters), Intuitive drag-and-measure interface, Accurate screen calibration, Custom calibration options, Universal device compatibility

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Ring Sizer free?

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

### Is Caliper&Ruler free?

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

### Which has better reviews, Ring Sizer or Caliper&Ruler?

Caliper&Ruler is rated higher. Ring Sizer averages 4.7 out of 5 from 50 ratings, while Caliper&Ruler averages 5.0 from 1 ratings.

### Do Ring Sizer or Caliper&Ruler have ads?

Neither Ring Sizer nor Caliper&Ruler shows ads.

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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.*