# Triangle Area Calculator Pro vs Ring Sizer

The clearest difference is price: Ring Sizer at Free against Triangle Area Calculator Pro's $1.99. Ring Sizer also leads on update cadence (monthly vs every 38 months). Triangle Area Calculator Pro's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Ring Sizer is free to download; Triangle Area Calculator Pro costs $1.99 up front. Ring Sizer sells 3 in-app purchases, starting at $2.99 per 7 days. Triangle Area Calculator Pro asks for nothing beyond the download.

Triangle Area Calculator Pro ships an update every 38 months, Ring Sizer monthly. The most recent releases landed on September 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Triangle Area Calculator Pro | Ring Sizer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.6 (177 ratings)](https://appshunter.io/ios/app/ring-sizer-ring-size-measure/id6479995221/reviews)** |
| Number of ratings | — | **177** |
| Positive reviews | — | 98.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 0 MB | 44 MB |
| Requires iOS | **14.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anna Filobok](https://appshunter.io/developer/1613515832) | [Vipul Prajapati](https://appshunter.io/developer/1737800971) |

## What reviewers say

### Triangle Area Calculator Pro

[App page](https://appshunter.io/ios/app/triangle-area-calculator-pro/id1568248433)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring Sizer

[App page](https://appshunter.io/ios/app/ring-sizer-ring-size-measure/id6479995221)

This app helps you accurately measure your ring size at home. It offers precise measurements in various units and international standards, eliminating guesswork for perfect-fitting jewelry. Ideal for online shoppers, gift-givers, and jewelers.

**Highlights:** Accurate ring size measurements, Metric and imperial units, International sizing standards (USA, UK, EU, etc.), Diameter or circumference measurement, Visual guides for accuracy, Save and share measurements

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ring Sizer, Ring Size Measure | $2.99 | per 7 days |
| Ring Size Measure, Ring Sizer | $6.99 | per month |
| Ring Sizer Measure Premium | $19.99 | per year |


## Frequently asked questions

### Is Triangle Area Calculator Pro free?

Triangle Area Calculator Pro costs $1.99, with no in-app purchases.

### Is Ring Sizer free?

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

### Do Triangle Area Calculator Pro or Ring Sizer have ads?

Neither Triangle Area Calculator Pro nor Ring Sizer shows ads.

### Which is updated more often, Triangle Area Calculator Pro or Ring Sizer?

Triangle Area Calculator Pro ships an update every 38 months, and Ring Sizer monthly. Most recently, Triangle Area Calculator Pro was updated on September 25, 2026 and Ring Sizer on October 18, 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.*