# Triangle & Angle calculator vs Tri

The clearest difference is review sentiment: Tri at 67% against Triangle & Angle calculator's 5%. Tri also leads on rating (4.5 vs 4.1) and iOS requirement (12.0 vs 15.0). Triangle & Angle calculator's advantage is ads (none vs shown) and ratings volume (217 vs 17). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Triangle & Angle calculator sells 2 one-off in-app purchases and Tri sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Tri holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: Triangle & Angle calculator has 217 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 5% of Triangle & Angle calculator's written reviews are positive against 67% of Tri's.

Triangle & Angle calculator ships an update every 3 months, Tri every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Triangle & Angle calculator | Tri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (217 ratings)](https://appshunter.io/ios/app/triangle-and-angle-calculator/id1278963382/reviews) | **[4.5 (17 ratings)](https://appshunter.io/ios/app/tri-go-math-your-math-helper/id1525513476/reviews)** |
| Number of ratings | **217** | 17 |
| Positive reviews | 4.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 48 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [Alejandro Apodaca](https://appshunter.io/developer/1524127326) |

## What reviewers say

### Triangle & Angle calculator

[App page](https://appshunter.io/ios/app/triangle-and-angle-calculator/id1278963382)

Easily solve geometry exercises and verify your calculations with this tool. It simplifies complex problems with a single click, making math more accessible.

**Highlights:** Solve geometry exercises, Check calculations, Simple click interface, Angle calculations, Formula solver

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deleting advertisements | $0.99 | one-time |
| Detail Calculations and formul | $1.99 | one-time |

**What reviewers like**

- 👍 Detailed calculations and formulas (rare)

**What reviewers complain about**

-  광고 Excessive and intrusive ads
- 💰 Forced payment for basic features
- 💸 Unclear payment for formulas
- 🚫 Ads obstruct usability
- 👎 Poor UI/UX

**Reported bugs**

- Pop-up obstructs initial use
- Cannot change settings due to pop-up
- Formulas not visible after payment
- App resets angles
- Menu covers solution

**Requested features**

- Metric version available
- Option to disable ads without payment


### Tri

[App page](https://appshunter.io/ios/app/tri-go-math-your-math-helper/id1525513476)

This app simplifies math homework with a suite of tools including area, basic, and trigonometry calculators. It offers offline access and equation solvers for first and second-degree equations, with more features planned.

**Highlights:** Offline Access, Area Calculator, Basic Calculator, Trigonometry Calculator, Unit Converter, Equation Solvers

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quitar anuncios | $1.99 | one-time |


## Frequently asked questions

### Is Triangle & Angle calculator free?

Triangle & Angle calculator is free to download, with in-app purchases available.

### Is Tri free?

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

### Which has better reviews, Triangle & Angle calculator or Tri?

Tri is rated higher. Triangle & Angle calculator averages 4.1 out of 5 from 217 ratings, while Tri averages 4.5 from 17 ratings.

### Do Triangle & Angle calculator or Tri have ads?

Tri shows ads; Triangle & Angle calculator does not.

### Which is updated more often, Triangle & Angle calculator or Tri?

Triangle & Angle calculator ships an update every 3 months, and Tri every 2 months. Most recently, Triangle & Angle calculator was updated on October 24, 2026 and Tri 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.*