# Trigonometry Help vs Trigonometry Calculator.

The clearest difference is price: Trigonometry Calculator. at Free against Trigonometry Help's $1.99. Trigonometry Calculator. also leads on update cadence (every 2 weeks vs every 13 months) and rating (5.0 vs 4.7). Trigonometry Help's advantage is ads (none vs shown) and ratings volume (477 vs 3). On in-app purchases, monetization model and device support there is nothing between them.

Trigonometry Calculator. is free to download; Trigonometry Help costs $1.99 up front. Trigonometry Help sells 3 one-off in-app purchases 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 4.7. That said, the two scores are not equally well evidenced: Trigonometry Help has 477 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 91% of Trigonometry Help's written reviews are positive against 100% of Trigonometry Calculator.'s.

Trigonometry Help ships an update every 13 months, Trigonometry Calculator. every 2 weeks. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Trigonometry Help | Trigonometry Calculator. |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.7 (477 ratings)](https://appshunter.io/ios/app/trigonometry-help/id411415648/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/trigonometry-calculator/id6741517618/reviews)** |
| Number of ratings | **477** | 3 |
| Positive reviews | 90.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 21 MB | 64 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [Horitech](https://appshunter.io/developer/1794537335) |

## What reviewers say

### Trigonometry Help

[App page](https://appshunter.io/ios/app/trigonometry-help/id411415648)

This app helps you quickly solve for unknown angles and sides of right-angled triangles. It provides a workings view for understanding the math, a scale drawing of the triangle, and a reference for basic trigonometric formulas. You can input angles in various formats and choose your desired decimal precision.

**Highlights:** Solve right-angled triangles, Workings view for solutions, Scale drawing of solved triangle, Basic trig formulae reference, Multiple angle input formats, Customizable decimal places

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trig Help Premium | $0.99 | one-time |
| Trig Help Premium | $1.99 | one-time |
| Trig Help Premium | $3.99 | one-time |

**What reviewers like**

- 🚀 Quick and easy to use
- 👍 User-friendly interface
- 🔧 Helpful for tradesmen and professionals
- ⚙️ Accurate calculations
- 🔍 Convenient for on-site use

**What reviewers complain about**

- 🔢 Limited to right-angled triangles only
- 🔍 Lacks advanced trig functions
- 🔀 No option to rotate/flip the triangle view

**Reported bugs**

- Inconsistent performance on older devices
- Occasional crashes or freezes

**Requested features**

- Support for irregular triangles
- Ability to show step-by-step workings
- Option to switch between degrees/minutes/seconds and decimal values


### 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 Trigonometry Help free?

Trigonometry Help costs $1.99, and also offers in-app purchases.

### Is Trigonometry Calculator. free?

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

### Which has better reviews, Trigonometry Help or Trigonometry Calculator.?

Trigonometry Calculator. is rated higher. Trigonometry Help averages 4.7 out of 5 from 477 ratings, while Trigonometry Calculator. averages 5.0 from 3 ratings.

### Do Trigonometry Help or Trigonometry Calculator. have ads?

Trigonometry Calculator. shows ads; Trigonometry Help does not.

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

Trigonometry Help ships an update every 13 months, and Trigonometry Calculator. every 2 weeks. Most recently, Trigonometry Help was updated on September 23, 2026 and Trigonometry Calculator. on September 27, 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.*