# Trigonometry calc vs Triangle Calculator Pythagoras

The clearest difference is rating: Triangle Calculator Pythagoras at 4.0 against Trigonometry calc's 3.0. Triangle Calculator Pythagoras also leads on update cadence (monthly vs every 3 months). Trigonometry calc's advantage is iOS requirement (15.6 vs 17.0). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Trigonometry calc sells 1 one-off in-app purchase and Triangle Calculator Pythagoras sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Triangle Calculator Pythagoras holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Trigonometry calc ships an update every 3 months, Triangle Calculator Pythagoras monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Trigonometry calc | Triangle Calculator Pythagoras |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-calc/id1306864057/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/triangle-calculator-pythagoras/id1600108278/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 22 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bo Kalvslund](https://appshunter.io/developer/572272193) | [Muhammed Samil DEMIR](https://appshunter.io/developer/1600108280) |

## What reviewers say

### Trigonometry calc

[App page](https://appshunter.io/ios/app/trigonometry-calc/id1306864057)

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

**Highlights:** Calculate side lengths, Calculate angles, Pythagorean Theorem, Trigonometry functions, Learn simple trigonometry, General triangle calculator (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


### Triangle Calculator Pythagoras

[App page](https://appshunter.io/ios/app/triangle-calculator-pythagoras/id1600108278)

This geometry tool simplifies right-angled triangle calculations. It instantly solves for missing sides, angles, area, and perimeter using the Pythagorean theorem and trigonometry. It also displays the formulas used for each calculation, aiding understanding.

**Highlights:** Pythagorean Theorem Solver, Trigonometry Functions, Instant Area and Perimeter Calculation, View Calculation Formulas, Input known measurements to find missing values

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $4.99 | per month |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is Trigonometry calc free?

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

### Is Triangle Calculator Pythagoras free?

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

### Which has better reviews, Trigonometry calc or Triangle Calculator Pythagoras?

Triangle Calculator Pythagoras is rated higher. Trigonometry calc averages 3.0 out of 5 from 2 ratings, while Triangle Calculator Pythagoras averages 4.0 from 1 ratings.

### Do Trigonometry calc or Triangle Calculator Pythagoras have ads?

Both Trigonometry calc and Triangle Calculator Pythagoras show ads.

### Which is updated more often, Trigonometry calc or Triangle Calculator Pythagoras?

Trigonometry calc ships an update every 3 months, and Triangle Calculator Pythagoras monthly. Most recently, Trigonometry calc was updated on October 24, 2026 and Triangle Calculator Pythagoras on October 24, 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.*