# Greatest Common Factor vs Expiry Tracker

The clearest difference is price: Expiry Tracker at Free against Greatest Common Factor's $0.99. Expiry Tracker also leads on update cadence (every 8 days vs every 38 months). Greatest Common Factor's advantage is rating (5.0 vs 1.0) and iOS requirement (14.1 vs 17.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Expiry Tracker 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 holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Greatest Common Factor ships an update every 38 months, Expiry Tracker every 8 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Greatest Common Factor | Expiry Tracker |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/greatest-common-factor/id1573121817/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/expiry-tracker-warranty-docs/id6795165681/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 8 days** |
| Monetization | Paid | **Freemium** |
| Size | 1 MB | 5 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) | [Xiamen Fengyun Network Technology Co., Ltd.](https://appshunter.io/developer/1443469599) |

## 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


### Expiry Tracker

[App page](https://appshunter.io/ios/app/expiry-tracker-warranty-docs/id6795165681)

Organize and track all your time-sensitive documents like warranties, subscriptions, and IDs. Get reminders for upcoming due dates and monitor your spending on these items. Data is kept private on your device with optional iCloud sync.

**Highlights:** Track warranties, subscriptions, IDs, and leases, Due date dashboard with urgency grouping, Monitor daily and monthly spending, Calendar and timeline view of bills, Customizable advance reminders, Home screen widgets for quick overview, Data export and local data clearing

**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 Expiry Tracker free?

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

### Which has better reviews, Greatest Common Factor or Expiry Tracker?

Greatest Common Factor is rated higher. Greatest Common Factor averages 5.0 out of 5 from 1 ratings, while Expiry Tracker averages 1.0 from 1 ratings.

### Do Greatest Common Factor or Expiry Tracker have ads?

Neither Greatest Common Factor nor Expiry Tracker shows ads.

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

Greatest Common Factor ships an update every 38 months, and Expiry Tracker every 8 days. Most recently, Greatest Common Factor was updated on November 3, 2026 and Expiry Tracker on October 31, 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.*