# calcMod vs Pythagoras Interactive

The clearest difference is update cadence: Pythagoras Interactive at every 2 weeks against calcMod's every 18 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for calcMod against 5.0 for Pythagoras Interactive. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

calcMod ships an update every 18 months, Pythagoras Interactive every 2 weeks. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | calcMod | Pythagoras Interactive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/calcmod-light/id1445360983/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/pythagoras-interactive/id6466731389/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 1 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alain Cardinaux](https://appshunter.io/developer/1443066124) | [ALAN PETERSON](https://appshunter.io/developer/1436516782) |

## What reviewers say

### calcMod

[App page](https://appshunter.io/ios/app/calcmod-light/id1445360983)

This application helps users perform complex mathematical calculations, including factorials, primality tests, and modular arithmetic. It's designed for students and educators interested in number theory and the properties of integers.

**Highlights:** Factorial calculation up to 80!, Primality testing with change mod function, Divisor identification, Modular exponentiation, Modular inverse calculation, Number storage and recall

**Features:** macOS Compatibility

**In-app purchases:** none


### Pythagoras Interactive

[App page](https://appshunter.io/ios/app/pythagoras-interactive/id6466731389)

Explore the Pythagorean Theorem with an interactive visual tool. Adjust triangle legs to observe real-time changes in square areas and hypotenuse length. Distances are displayed in radical form when necessary.

**Highlights:** Interactive triangle manipulation, Visual representation of squares on sides, Real-time updates to hypotenuse and areas, Radical form for distances, Clear labeling of sides and areas

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

**In-app purchases:** none


## Frequently asked questions

### Is calcMod free?

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

### Is Pythagoras Interactive free?

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

### Which has better reviews, calcMod or Pythagoras Interactive?

calcMod and Pythagoras Interactive are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do calcMod or Pythagoras Interactive have ads?

Neither calcMod nor Pythagoras Interactive shows ads.

### Which is updated more often, calcMod or Pythagoras Interactive?

calcMod ships an update every 18 months, and Pythagoras Interactive every 2 weeks. Most recently, calcMod was updated on October 19, 2026 and Pythagoras Interactive on October 16, 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.*