# GCD and LCM vs Simultaneous Equations

The clearest difference is review sentiment: GCD and LCM at 69% against Simultaneous Equations's 0%. GCD and LCM also leads on device support (4 vs 1). Simultaneous Equations's advantage is price ($1.99 vs $5.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

GCD and LCM costs $5.99 and Simultaneous Equations $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GCD and LCM ships an update every 19 months, Simultaneous Equations every 36 months. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | GCD and LCM | Simultaneous Equations |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/gcd-and-lcm/id603026694/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **69.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 19 months** | Every 36 months |
| Monetization | Paid | Paid |
| Size | 14 MB | 50 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### GCD and LCM

[App page](https://appshunter.io/ios/app/gcd-and-lcm/id603026694)

This app calculates the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) for up to four numbers. It also provides prime factorization and keeps a history of calculations, which can be emailed.

**Highlights:** Calculates GCD/GCF for 2-4 numbers, Calculates LCM for 2-4 numbers, Finds prime factorization, Stores calculation history, Sends results and history via email, Supports portrait and landscape modes

**Features:** Vision Pro support

**In-app purchases:** none


### Simultaneous Equations

[App page](https://appshunter.io/ios/app/simultaneous-equations/id731495724)

This interactive tool helps students visualize and understand simultaneous equations. It demonstrates graphical, substitution, and elimination methods for solving them, with a quiz to test comprehension and lessons on real-world applications.

**Highlights:** Graphical representation of equations, Substitution method demonstration, Elimination method demonstration, Interactive equation definition, Quiz for understanding assessment, Illustrated lessons with real-world examples

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GCD and LCM free?

GCD and LCM costs $5.99, with no in-app purchases.

### Is Simultaneous Equations free?

Simultaneous Equations costs $1.99, with no in-app purchases.

### Do GCD and LCM or Simultaneous Equations have ads?

Neither GCD and LCM nor Simultaneous Equations shows ads.

### Which is updated more often, GCD and LCM or Simultaneous Equations?

GCD and LCM ships an update every 19 months, and Simultaneous Equations every 36 months. Most recently, GCD and LCM was updated on October 13, 2026 and Simultaneous Equations on October 9, 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.*