# Prime Number Checker vs PK Learnings

The clearest difference is update cadence: Prime Number Checker at every 5 weeks against PK Learnings's every 11 months. Prime Number Checker also leads on iOS requirement (9.0 vs 15.0). On price, ads, 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.

Prime Number Checker ships an update every 5 weeks, PK Learnings every 11 months. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Prime Number Checker | PK Learnings |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 11 months |
| Size | 10 MB | 327 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Thuvesen](https://appshunter.io/developer/1110341546) | [Bijin Vs](https://appshunter.io/developer/1777773218) |

## What reviewers say

### Prime Number Checker

[App page](https://appshunter.io/ios/app/prime-number-checker/id1114293126)

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

**In-app purchases:** none


### PK Learnings

[App page](https://appshunter.io/ios/app/pk-learnings/id6754631485)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Prime Number Checker free?

Prime Number Checker is free to download, with no in-app purchases.

### Is PK Learnings free?

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

### Do Prime Number Checker or PK Learnings have ads?

Neither Prime Number Checker nor PK Learnings shows ads.

### Which is updated more often, Prime Number Checker or PK Learnings?

Prime Number Checker ships an update every 5 weeks, and PK Learnings every 11 months. Most recently, Prime Number Checker was updated on October 29, 2026 and PK Learnings on October 28, 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.*