# Prime number Snake Panic vs GridCalculation

The clearest difference is device support: Prime number Snake Panic at 3 against GridCalculation's 1. Prime number Snake Panic also leads on iOS requirement (13.0 vs 16.6). On price, update cadence, ads 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.

Prime number Snake Panic ships an update fortnightly, GridCalculation weekly. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Prime number Snake Panic | GridCalculation |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (11 ratings)](https://appshunter.io/ios/app/prime-number-snake-panic/id1595460548/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 64 MB | 16 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ikeda tomoki](https://appshunter.io/developer/1538370047) | [Katsuhiko Yao](https://appshunter.io/developer/1543188534) |

## What reviewers say

### Prime number Snake Panic

[App page](https://appshunter.io/ios/app/prime-number-snake-panic/id1595460548)

Practice identifying prime numbers through an engaging game. Tap for primes and swipe for non-primes, which then decompose into a snake-like sequence. Compete globally for the highest score.

**Highlights:** Prime number identification, Number decomposition, Snake-like gameplay, High score tracking, Worldwide ranking

**Features:** macOS Compatibility

**In-app purchases:** none


### GridCalculation

[App page](https://appshunter.io/ios/app/gridcalculation/id6745461475)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prime number Snake Panic free?

Prime number Snake Panic is free to download, with no in-app purchases.

### Is GridCalculation free?

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

### Do Prime number Snake Panic or GridCalculation have ads?

Both Prime number Snake Panic and GridCalculation show ads.

### Which is updated more often, Prime number Snake Panic or GridCalculation?

Prime number Snake Panic ships an update fortnightly, and GridCalculation weekly. Most recently, Prime number Snake Panic was updated on October 4, 2026 and GridCalculation on October 8, 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.*