# Plus3 Blocks vs Collatz Hailstone Link

The clearest difference is ads: Plus3 Blocks at none against Collatz Hailstone Link's shown. Collatz Hailstone Link's advantage is iOS requirement (14.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Plus3 Blocks ships an update every 9 days, Collatz Hailstone Link weekly. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Plus3 Blocks | Collatz Hailstone Link |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Weekly** |
| Size | 1 MB | 118 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Suleyman OZCAN](https://appshunter.io/developer/1863063970) | [KwangHo Yun](https://appshunter.io/developer/1669492345) |

## What reviewers say

### Plus3 Blocks

[App page](https://appshunter.io/ios/app/plus3-blocks/id6779650743)

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

**In-app purchases:** none


### Collatz Hailstone Link

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Plus3 Blocks free?

Plus3 Blocks is free to download, with no in-app purchases.

### Is Collatz Hailstone Link free?

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

### Do Plus3 Blocks or Collatz Hailstone Link have ads?

Collatz Hailstone Link shows ads; Plus3 Blocks does not.

### Which is updated more often, Plus3 Blocks or Collatz Hailstone Link?

Plus3 Blocks ships an update every 9 days, and Collatz Hailstone Link weekly. Most recently, Plus3 Blocks was updated on September 22, 2026 and Collatz Hailstone Link on September 7, 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.*