# Modular Arithmetic vs Touch Trigonometry

The clearest difference is price: Touch Trigonometry at Free against Modular Arithmetic's $1.99. Modular Arithmetic's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads there is nothing between them.

Touch Trigonometry is free to download; Modular Arithmetic costs $1.99 up front. Touch Trigonometry sells 1 one-off in-app purchase. Modular Arithmetic asks for nothing beyond the download.

## The numbers

| Metric | Modular Arithmetic | Touch Trigonometry |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/modular-arithmetic/id687735575/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | — |
| Monetization | Paid | — |
| Size | 2 MB | 48 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Burton](https://appshunter.io/developer/687735578) | [Aisatsu LLC](https://appshunter.io/developer/1874553323) |

## What reviewers say

### Modular Arithmetic

[App page](https://appshunter.io/ios/app/modular-arithmetic/id687735575)

Perform calculations with remainders using a chosen modulus. Supports large numbers, fast modular division and exponentiation, and displays a full calculation transcript. Ideal for understanding modular arithmetic's applications in math and computer science.

**Highlights:** Fixed modulus selection, Arbitrarily large numbers, Fast modular division and exponentiation, Full calculation transcript, Order of operations convention, External keyboard and Siri Shortcuts support

**Features:** Vision Pro support

**In-app purchases:** none


### Touch Trigonometry

[App page](https://appshunter.io/ios/app/touch-trigonometry/id6758712159)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Touch Trigonometry | $4.99 | one-time |


## Frequently asked questions

### Is Modular Arithmetic free?

Modular Arithmetic costs $1.99, with no in-app purchases.

### Is Touch Trigonometry free?

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

### Do Modular Arithmetic or Touch Trigonometry have ads?

Neither Modular Arithmetic nor Touch Trigonometry shows ads.

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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.*