# Pythagoras Calculator vs Trigonometry

The clearest difference is review sentiment: Pythagoras Calculator at 83% against Trigonometry's 0%. Pythagoras Calculator also leads on rating (4.6 vs 1.0) and ratings volume (242 vs 4). Trigonometry's advantage is in-app purchases (none vs 8) and iOS requirement (13.4 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Pythagoras Calculator sells 8 one-off in-app purchases. Trigonometry asks for nothing beyond the download.

Pythagoras Calculator holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Pythagoras Calculator has 242 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 83% of Pythagoras Calculator's written reviews are positive against 0% of Trigonometry's.

Pythagoras Calculator ships an update every 3 weeks, Trigonometry every 2 weeks. The most recent releases landed on October 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Pythagoras Calculator | Trigonometry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (242 ratings)](https://appshunter.io/ios/app/pythagoras-calculator/id1270384222/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/trigonometry/id1550614008/reviews) |
| Number of ratings | **242** | 4 |
| Positive reviews | **83.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 179 MB | 9 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [Konstantinos Anagnostou](https://appshunter.io/developer/1550614010) |

## What reviewers say

### Pythagoras Calculator

[App page](https://appshunter.io/ios/app/pythagoras-calculator/id1270384222)

Easily calculate any side of a right-angled triangle using the Pythagorean theorem. Input two sides to find the third, with all calculations saved in a history. Supports fractions and offers an ad-free option.

**Highlights:** Pythagorean theorem calculations, Calculate any of the three sides, History of calculations, Supports fraction input, Shareable solutions, Ad-free option

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use and simple interface
- ✅ Accurate calculations for Pythagorean theorem
- 📚 Shows step-by-step solutions for learning
- 🚀 Fast and efficient computation
- 💼 Useful for construction and woodworking projects

**What reviewers complain about**

- 📢 Intrusive and annoying advertisements
- 💳 Deceptive payment practices and fraudulent charges
- 🔐 Suspicious credit card requirements for access
- ⚠️ Forced rating prompts
- ❌ Limited functionality (only works with 2 known sides)

**Reported bugs**

- App crashes or fails to calculate
- Paid ad removal not working properly
- Fraudulent payment processing through third-party sites
- Occasional incorrect calculation results
- App not functioning on iPhone 5SE and older devices

**Requested features**

- Calculate triangle angles
- Support angle-based calculations with one side
- Better monetization without aggressive ads
- Improved ratings system
- Real-time results display


### Trigonometry

[App page](https://appshunter.io/ios/app/trigonometry/id1550614008)

Learn basic trigonometric formulas through interactive theory and fun games. Earn points to progress through levels and master the concepts.

**Highlights:** Memorize basic trigonometric formulas, Interactive theory section, Four included games, Earn points to advance levels, Beginner-friendly

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pythagoras Calculator free?

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

### Is Trigonometry free?

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

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

Pythagoras Calculator is rated higher. Pythagoras Calculator averages 4.6 out of 5 from 242 ratings, while Trigonometry averages 1.0 from 4 ratings.

### Do Pythagoras Calculator or Trigonometry have ads?

Neither Pythagoras Calculator nor Trigonometry shows ads.

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

Pythagoras Calculator ships an update every 3 weeks, and Trigonometry every 2 weeks. Most recently, Pythagoras Calculator was updated on October 18, 2026 and Trigonometry on September 22, 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.*