# Triangle Calculator vs ARCmaster

The clearest difference is in-app purchases: ARCmaster at none against Triangle Calculator's 2. ARCmaster also leads on update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Triangle Calculator sells 2 in-app purchases, starting at $0.99 per month. ARCmaster asks for nothing beyond the download.

Triangle Calculator ships an update every 4 months, ARCmaster every 3 weeks. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Triangle Calculator | ARCmaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/triangle-calculator-solver/id6757908425/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Freemium | — |
| Size | 15 MB | 30 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vaghani Keyur](https://appshunter.io/developer/1164464860) | [Anh Thu Duong](https://appshunter.io/developer/1887275689) |

## What reviewers say

### Triangle Calculator

[App page](https://appshunter.io/ios/app/triangle-calculator-solver/id6757908425)

This geometry tool simplifies trigonometry and triangle calculations. It provides quick and accurate results for various measurements, including angles, sides, area, and advanced geometric properties. Ideal for students, professionals, and anyone needing precise calculations.

**Highlights:** Triangle angle calculation, Side length and hypotenuse calculation, Area and perimeter calculation, Advanced geometry calculations, User-friendly interface, Accurate results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Yearly Premium | $2.99 | per year |


### ARCmaster

[App page](https://appshunter.io/ios/app/arcmaster-geometry-calculator/id6761011090)

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

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Calculator free?

Triangle Calculator is free to download, with in-app purchases available.

### Is ARCmaster free?

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

### Do Triangle Calculator or ARCmaster have ads?

Neither Triangle Calculator nor ARCmaster shows ads.

### Which is updated more often, Triangle Calculator or ARCmaster?

Triangle Calculator ships an update every 4 months, and ARCmaster every 3 weeks. Most recently, Triangle Calculator was updated on October 7, 2026 and ARCmaster on October 10, 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.*