# Modular Arithmetic vs LCM GCD Prime Factor Math

The clearest difference is price: LCM GCD Prime Factor Math at $0.99 against Modular Arithmetic's $1.99. On update cadence, ads, in-app purchases and device support there is nothing between them.

Modular Arithmetic costs $1.99 and LCM GCD Prime Factor Math $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Modular Arithmetic ships an update every 12 months, LCM GCD Prime Factor Math every 18 months. The most recent releases landed on September 17, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Modular Arithmetic | LCM GCD Prime Factor Math |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| 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 | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 18 months |
| Monetization | Paid | — |
| Size | 2 MB | 5 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Burton](https://appshunter.io/developer/687735578) | [Maria Dolores Garcia Ferre](https://appshunter.io/developer/970100146) |

## 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


### LCM GCD Prime Factor Math

[App page](https://appshunter.io/ios/app/lcm-gcd-prime-factor-math/id1488738897)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Modular Arithmetic free?

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

### Is LCM GCD Prime Factor Math free?

LCM GCD Prime Factor Math costs $0.99, with no in-app purchases.

### Do Modular Arithmetic or LCM GCD Prime Factor Math have ads?

Neither Modular Arithmetic nor LCM GCD Prime Factor Math shows ads.

### Which is updated more often, Modular Arithmetic or LCM GCD Prime Factor Math?

Modular Arithmetic ships an update every 12 months, and LCM GCD Prime Factor Math every 18 months. Most recently, Modular Arithmetic was updated on September 17, 2026 and LCM GCD Prime Factor Math on May 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.*