# Greatest Common Factor vs Graffiti Guard

The clearest difference is price: Graffiti Guard at Free against Greatest Common Factor's $0.99. Graffiti Guard also leads on update cadence (every 9 days vs every 38 months). Greatest Common Factor's advantage is iOS requirement (14.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Graffiti Guard is free to download; Greatest Common Factor costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Greatest Common Factor ships an update every 38 months, Graffiti Guard every 9 days. The most recent releases landed on September 11, 2026 and August 10, 2026 respectively.

## The numbers

| Metric | Greatest Common Factor | Graffiti Guard |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/greatest-common-factor/id1573121817/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 1 MB | 43 MB |
| Requires iOS | **14.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [H Valeur](https://appshunter.io/developer/621824042) | [SimpliXio Pte. Ltd.](https://appshunter.io/developer/1735257600) |

## What reviewers say

### Greatest Common Factor

[App page](https://appshunter.io/ios/app/greatest-common-factor/id1573121817)

This app helps users find the factors of numbers, calculate the Greatest Common Factor (GCF) for two or more numbers, and simplify fractions. It's a useful tool for understanding number theory concepts and performing fraction simplification.

**Highlights:** Find factors of a number, Calculate GCF of two or more numbers, Simplify fractions, Understand number theory concepts, Fraction simplification tool

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

**In-app purchases:** none


### Graffiti Guard

[App page](https://appshunter.io/ios/app/graffiti-guard/id6792218806)

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

**In-app purchases:** none


## Frequently asked questions

### Is Greatest Common Factor free?

Greatest Common Factor costs $0.99, with no in-app purchases.

### Is Graffiti Guard free?

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

### Do Greatest Common Factor or Graffiti Guard have ads?

Neither Greatest Common Factor nor Graffiti Guard shows ads.

### Which is updated more often, Greatest Common Factor or Graffiti Guard?

Greatest Common Factor ships an update every 38 months, and Graffiti Guard every 9 days. Most recently, Greatest Common Factor was updated on September 11, 2026 and Graffiti Guard on August 10, 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.*