# Math Interactive vs Arbitrary Triangle PRO

The clearest difference is price: Math Interactive at Free against Arbitrary Triangle PRO's $2.99. Math Interactive also leads on ratings volume (726 vs 1) and iOS requirement (13.0 vs 15.0). Arbitrary Triangle PRO's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 13 months). On ads and device support there is nothing between them.

Math Interactive is free to download; Arbitrary Triangle PRO costs $2.99 up front. Math Interactive sells 1 one-off in-app purchase. Arbitrary Triangle PRO asks for nothing beyond the download.

Arbitrary Triangle PRO holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Math Interactive has 726 ratings behind it against 1, so its average is the more settled of the two.

Math Interactive ships an update every 13 months, Arbitrary Triangle PRO every 3 weeks. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Math Interactive | Arbitrary Triangle PRO |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [4.6 (726 ratings)](https://appshunter.io/ios/app/math-interactive/id1169802338/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/arbitrary-triangle-pro/id1617819308/reviews)** |
| Number of ratings | **726** | 1 |
| Positive reviews | 58.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 weeks** |
| Monetization | **Freemium** | Paid |
| Size | 46 MB | 182 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rune Johannes Overgaard Hoejlund](https://appshunter.io/developer/1720383877) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Math Interactive

[App page](https://appshunter.io/ios/app/math-interactive/id1169802338)

Enhance your mathematical understanding with a comprehensive reference covering 23 subjects, over 200 articles, and interactive illustrations. Explore detailed explanations, solved problems, and proofs to master concepts from algebra to calculus. Access all content and features with a premium upgrade.

**Highlights:** 23 math subjects covered, Over 200 articles with detailed descriptions, Solved solutions and thorough proofs, Interactive illustrations for better understanding, Quick search for articles and formulas, Recents category to pick up where you left off, Share articles via social media and messaging

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |

**What reviewers like**

- 🚀 Quick and concise
- 👍 Great for math help and studying
- 👍 Excellent customer service
- 👍 Clear and comprehensive
- 👍 Interactive and well-designed

**What reviewers complain about**

- 🐛 Lacking in content and topics
- 💰 Too much content locked behind paywall
- 🤔 Explanations could be more intuitive
- 🤔 Needs more examples and practice

**Reported bugs**

- Incorrect formulas and calculations
- Compatibility issues with newer iOS versions

**Requested features**

- Add more advanced math topics like calculus, matrices, etc.
- Include step-by-step solutions and more interactive elements
- Improve organization and flow of content
- Provide more real-world examples and applications


### Arbitrary Triangle PRO

[App page](https://appshunter.io/ios/app/arbitrary-triangle-pro/id1617819308)

This app calculates all unknown quantities of an arbitrary triangle. It displays the formulas used and provides step-by-step solutions, supporting decimals and fractions. Calculations are saved in history and can be shared.

**Highlights:** Calculates all triangle quantities, Displays formulas used, Step-by-step solutions, Supports decimals and fractions, Calculation history, Shareable solutions

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

**In-app purchases:** none


## Frequently asked questions

### Is Math Interactive free?

Math Interactive is free to download, with in-app purchases available.

### Is Arbitrary Triangle PRO free?

Arbitrary Triangle PRO costs $2.99, with no in-app purchases.

### Which has better reviews, Math Interactive or Arbitrary Triangle PRO?

Arbitrary Triangle PRO is rated higher. Math Interactive averages 4.6 out of 5 from 726 ratings, while Arbitrary Triangle PRO averages 5.0 from 1 ratings.

### Do Math Interactive or Arbitrary Triangle PRO have ads?

Neither Math Interactive nor Arbitrary Triangle PRO shows ads.

### Which is updated more often, Math Interactive or Arbitrary Triangle PRO?

Math Interactive ships an update every 13 months, and Arbitrary Triangle PRO every 3 weeks. Most recently, Math Interactive was updated on September 21, 2026 and Arbitrary Triangle PRO on September 17, 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.*