# Arc+ vs Trigonometry Calculator.

The clearest difference is review sentiment: Trigonometry Calculator. at 100% against Arc+'s 50%. Trigonometry Calculator. also leads on update cadence (every 2 weeks vs every 4 months) and rating (5.0 vs 4.6). Arc+'s advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Arc+ sells 1 one-off in-app purchase and Trigonometry Calculator. sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Trigonometry Calculator. holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Arc+ has 113 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Arc+'s written reviews are positive against 100% of Trigonometry Calculator.'s.

Arc+ ships an update every 4 months, Trigonometry Calculator. every 2 weeks. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Arc+ | Trigonometry Calculator. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (113 ratings)](https://appshunter.io/ios/app/arc-plus/id1464058503/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618/reviews)** |
| Number of ratings | **113** | 3 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 64 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Saad](https://appshunter.io/developer/1291109619) | [Horitech](https://appshunter.io/developer/1794537335) |

## What reviewers say

### Arc+

[App page](https://appshunter.io/ios/app/arc-plus/id1464058503)

This utility app helps users calculate various dimensions of circular arcs, including radius, length, width, and height. It offers a simple interface where users input two known values to derive the rest. Additional features include a unit converter, result saving, and sharing capabilities.

**Highlights:** Calculate Radius, Length, Width, Height, Tangent, Input two known values to find others, Measurement units converter, Save results to favorites, Share calculations

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Blocker | $4.99 | one-time |


### Trigonometry Calculator.

[App page](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618)

This app calculates key values for right-angled and scalene triangles with high precision. It offers a user-friendly interface, flexible angle units, and includes a reference guide to trigonometric formulas. A subscription unlocks calculation steps and removes ads.

**Highlights:** Right-angled & scalene triangle support, Formula reference guide, Accurate side, angle, and area calculations, High precision to 14 decimal places, Flexible angle units (degrees/radians), User-friendly interface

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $24.99 | per year |


## Frequently asked questions

### Is Arc+ free?

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

### Is Trigonometry Calculator. free?

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

### Which has better reviews, Arc+ or Trigonometry Calculator.?

Trigonometry Calculator. is rated higher. Arc+ averages 4.6 out of 5 from 113 ratings, while Trigonometry Calculator. averages 5.0 from 3 ratings.

### Do Arc+ or Trigonometry Calculator. have ads?

Trigonometry Calculator. shows ads; Arc+ does not.

### Which is updated more often, Arc+ or Trigonometry Calculator.?

Arc+ ships an update every 4 months, and Trigonometry Calculator. every 2 weeks. Most recently, Arc+ was updated on September 22, 2026 and Trigonometry Calculator. on September 9, 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.*