# Prime Flow vs Collatz Hailstone Link

The clearest difference is price: Collatz Hailstone Link at Free against Prime Flow's $0.99. Collatz Hailstone Link also leads on iOS requirement (14.0 vs 26.1). Prime Flow's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Collatz Hailstone Link is free to download; Prime Flow costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Prime Flow | Collatz Hailstone Link |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/prime-flow/id6757245218/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Weekly |
| Monetization | Paid | — |
| Size | 194 MB | 118 MB |
| Requires iOS | 26.1 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ben Bedard](https://appshunter.io/developer/1853870109) | [KwangHo Yun](https://appshunter.io/developer/1669492345) |

## What reviewers say

### Prime Flow

[App page](https://appshunter.io/ios/app/prime-flow/id6757245218)

Explore the fascinating world of prime numbers through a minimalist puzzle game. Learn number theory through engaging gameplay, discovering patterns and unlocking lore. Designed for calm concentration and a playful approach to mathematical concepts.

**Highlights:** Explore prime patterns, Learn through experimentation, Unlock progression and lore, Track accomplishments, Clean interface for concentration

**Features:** macOS Compatibility

**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 Prime Flow free?

Prime Flow costs $0.99, with no in-app purchases.

### Is Collatz Hailstone Link free?

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

### Do Prime Flow or Collatz Hailstone Link have ads?

Collatz Hailstone Link shows ads; Prime Flow does not.

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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.*