# Collatz Hailstone Link vs Gem Falls

The clearest difference is ads: Gem Falls at none against Collatz Hailstone Link's shown. Collatz Hailstone Link's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 18.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 7, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Collatz Hailstone Link | Gem Falls |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Size | 118 MB | 51 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KwangHo Yun](https://appshunter.io/developer/1669492345) | [Sandrino Kelders](https://appshunter.io/developer/6797311872) |

## What reviewers say

### Collatz Hailstone Link

[App page](https://appshunter.io/ios/app/collatz-hailstone-link/id6780455667)

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

**In-app purchases:** none


### Gem Falls

[App page](https://appshunter.io/ios/app/gem-falls/id6797334147)

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

**In-app purchases:** none


## Frequently asked questions

### Is Collatz Hailstone Link free?

Collatz Hailstone Link is free to download, with no in-app purchases.

### Is Gem Falls free?

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

### Do Collatz Hailstone Link or Gem Falls have ads?

Collatz Hailstone Link shows ads; Gem Falls does not.

### Which is updated more often, Collatz Hailstone Link or Gem Falls?

Collatz Hailstone Link ships an update weekly, and Gem Falls weekly. Most recently, Collatz Hailstone Link was updated on September 7, 2026 and Gem Falls on September 21, 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.*