# Greatest Common Factor vs Heliochron

The clearest difference is price: Heliochron at Free against Greatest Common Factor's $0.99. Heliochron also leads on update cadence (weekly vs every 38 months). Greatest Common Factor's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 17.0). On ads and in-app purchases there is nothing between them.

Heliochron 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, Heliochron weekly. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Greatest Common Factor | Heliochron |
| --- | --- | --- |
| 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 | **Weekly** |
| Monetization | Paid | — |
| Size | 1 MB | 28 MB |
| Requires iOS | **14.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [H Valeur](https://appshunter.io/developer/621824042) | [ViSSee AG](https://appshunter.io/developer/374083637) |

## 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


### Heliochron

[App page](https://appshunter.io/ios/app/heliochron/id6810693998)

**In-app purchases:** none


## Frequently asked questions

### Is Greatest Common Factor free?

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

### Is Heliochron free?

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

### Do Greatest Common Factor or Heliochron have ads?

Neither Greatest Common Factor nor Heliochron shows ads.

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

Greatest Common Factor ships an update every 38 months, and Heliochron weekly. Most recently, Greatest Common Factor was updated on October 16, 2026 and Heliochron on October 13, 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.*