# Trigonometry Calculator. vs Pipefitter's Mate

The clearest difference is price: Trigonometry Calculator. at Free against Pipefitter's Mate's $7.99. Pipefitter's Mate's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Trigonometry Calculator. is free to download; Pipefitter's Mate costs $7.99 up front. Trigonometry Calculator. sells 2 in-app purchases, starting at $2.99 per month. Pipefitter's Mate asks for nothing beyond the download.

Trigonometry Calculator. ships an update every 2 weeks, Pipefitter's Mate weekly. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Trigonometry Calculator. | Pipefitter's Mate |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 64 MB | 35 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Horitech](https://appshunter.io/developer/1794537335) | [Florin Chiriac](https://appshunter.io/developer/1875844632) |

## What reviewers say

### 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 |


### Pipefitter's Mate

[App page](https://appshunter.io/ios/app/pipefitters-mate-pipe-offset/id6758932569)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry Calculator. free?

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

### Is Pipefitter's Mate free?

Pipefitter's Mate costs $7.99, with no in-app purchases.

### Do Trigonometry Calculator. or Pipefitter's Mate have ads?

Trigonometry Calculator. shows ads; Pipefitter's Mate does not.

### Which is updated more often, Trigonometry Calculator. or Pipefitter's Mate?

Trigonometry Calculator. ships an update every 2 weeks, and Pipefitter's Mate weekly. Most recently, Trigonometry Calculator. was updated on September 28, 2026 and Pipefitter's Mate on September 29, 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.*