# Tri vs Angle Finder

The clearest difference is review sentiment: Tri at 100% against Angle Finder's 50%. Tri also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 1). Angle Finder's advantage is ads (none vs shown) and update cadence (every 2 months vs every 12 months). On price and device support there is nothing between them.

Both are free to download. Angle Finder sells 1 one-off in-app purchase. Tri asks for nothing beyond the download.

Tri holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Angle Finder has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Tri's written reviews are positive against 50% of Angle Finder's.

Tri ships an update every 12 months, Angle Finder every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tri | Angle Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/angle-finder-trig-calculator/id6751524691/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 4 MB | 33 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thirdware.jp](https://appshunter.io/developer/464228680) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Tri

[App page](https://appshunter.io/ios/app/tri-func/id496807268)

This utility app provides the formula and value for calculating triangle properties. It's designed for quick access to mathematical formulas related to triangles.

**Highlights:** Triangle formula display, Value calculation, Quick access utility, Mathematical formulas

**Features:** Vision Pro support

**In-app purchases:** none


### Angle Finder

[App page](https://appshunter.io/ios/app/angle-finder-trig-calculator/id6751524691)

This app simplifies complex geometry and trigonometry calculations. It helps users find angles, side lengths, and areas of various shapes, serving as a portable math assistant for students and professionals.

**Highlights:** Triangle solver, Angle finder, PCD & chord calculator, All-in-one geometry calculator, User-friendly interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $1.99 | one-time |


## Frequently asked questions

### Is Tri free?

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

### Is Angle Finder free?

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

### Which has better reviews, Tri or Angle Finder?

Tri is rated higher. Tri averages 5.0 out of 5 from 1 ratings, while Angle Finder averages 4.0 from 5 ratings.

### Do Tri or Angle Finder have ads?

Tri shows ads; Angle Finder does not.

### Which is updated more often, Tri or Angle Finder?

Tri ships an update every 12 months, and Angle Finder every 2 months. Most recently, Tri was updated on October 20, 2026 and Angle Finder 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.*