# CalcThagoras Geometry Solver vs Tri

The clearest difference is review sentiment: Tri at 100% against CalcThagoras Geometry Solver's 0%. Tri also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 1). CalcThagoras Geometry Solver's advantage is ads (none vs shown) and update cadence (every 6 weeks vs every 12 months). On price, ratings volume and device support there is nothing between them.

Both are free to download. CalcThagoras Geometry Solver 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. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of CalcThagoras Geometry Solver's written reviews are positive against 100% of Tri's.

CalcThagoras Geometry Solver ships an update every 6 weeks, Tri every 12 months. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CalcThagoras Geometry Solver | Tri |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/calcthagoras-geometry-solver/id463144045/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 weeks** | Every 12 months |
| Monetization | **Free** | Ad-supported |
| Size | 7 MB | 4 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marlon Trotzinski](https://appshunter.io/developer/912230788) | [Thirdware.jp](https://appshunter.io/developer/464228680) |

## What reviewers say

### CalcThagoras Geometry Solver

[App page](https://appshunter.io/ios/app/calcthagoras-geometry-solver/id463144045)

Easily calculate geometric shapes and bodies with step-by-step calculations. Features an intuitive interface, beautiful design, and the ability to draw figures with calculated values.

**Highlights:** Calculate geometric forms and bodies, View step-by-step calculations, Intuitive interface for easy input, Draw figures with calculated values, Supports triangles, circles, rectangles, cones, cuboids, and cylinders

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $1.99 | one-time |


### 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


## Frequently asked questions

### Is CalcThagoras Geometry Solver free?

CalcThagoras Geometry Solver is free to download, with in-app purchases available.

### Is Tri free?

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

### Which has better reviews, CalcThagoras Geometry Solver or Tri?

Tri is rated higher. CalcThagoras Geometry Solver averages 4.0 out of 5 from 1 ratings, while Tri averages 5.0 from 1 ratings.

### Do CalcThagoras Geometry Solver or Tri have ads?

Tri shows ads; CalcThagoras Geometry Solver does not.

### Which is updated more often, CalcThagoras Geometry Solver or Tri?

CalcThagoras Geometry Solver ships an update every 6 weeks, and Tri every 12 months. Most recently, CalcThagoras Geometry Solver was updated on October 2, 2026 and Tri on October 3, 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.*