# CalcThagoras Geometry Solver vs Brainy Builder

The clearest difference is review sentiment: Brainy Builder at 100% against CalcThagoras Geometry Solver's 0%. Brainy Builder also leads on rating (5.0 vs 4.0) and ratings volume (4 vs 1). CalcThagoras Geometry Solver's advantage is monetization model (free vs freemium) and iOS requirement (8.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. CalcThagoras Geometry Solver sells 1 one-off in-app purchase and Brainy Builder sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Brainy Builder holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews point the same way: 0% of CalcThagoras Geometry Solver's written reviews are positive against 100% of Brainy Builder's.

CalcThagoras Geometry Solver ships an update every 6 weeks, Brainy Builder every 3 weeks. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CalcThagoras Geometry Solver | Brainy Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/calcthagoras-geometry-solver/id463144045/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/brainy-builder-pro-calculator/id1539913001/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 49 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Marlon Trotzinski](https://appshunter.io/developer/912230788) | [Beyond Code AB](https://appshunter.io/developer/1539913003) |

## 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 |


### Brainy Builder

[App page](https://appshunter.io/ios/app/brainy-builder-pro-calculator/id1539913001)

This app offers a suite of tools for carpenters, simplifying complex calculations for measurements, spacing, and project planning. It supports both metric and imperial units, with free and expanded pro versions available.

**Highlights:** Metric and Imperial unit support, 8 free carpentry calculators, Equal spacing calculation, Parquet floor planning, Stair stringer calculation, Rafter calculations, Live drawing functionality

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| All formulas | Free | one-time |
| Pro | $11.99 | one-time |


## Frequently asked questions

### Is CalcThagoras Geometry Solver free?

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

### Is Brainy Builder free?

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

### Which has better reviews, CalcThagoras Geometry Solver or Brainy Builder?

Brainy Builder is rated higher. CalcThagoras Geometry Solver averages 4.0 out of 5 from 1 ratings, while Brainy Builder averages 5.0 from 4 ratings.

### Do CalcThagoras Geometry Solver or Brainy Builder have ads?

Neither CalcThagoras Geometry Solver nor Brainy Builder shows ads.

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

CalcThagoras Geometry Solver ships an update every 6 weeks, and Brainy Builder every 3 weeks. Most recently, CalcThagoras Geometry Solver was updated on October 19, 2026 and Brainy Builder 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.*