# Logic King vs Calcudoku

The clearest difference is in-app purchases: Calcudoku at none against Logic King's 1. Logic King's advantage is update cadence (every 10 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Logic King sells 1 one-off in-app purchase. Calcudoku asks for nothing beyond the download.

Logic King ships an update every 10 days, Calcudoku every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Logic King | Calcudoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calcudoku-math-logic-puzzles/id6772270032/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 85 MB | 104 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Netdomuz](https://appshunter.io/developer/1850784308) | [LogicSmith](https://appshunter.io/developer/6772270034) |

## What reviewers say

### Logic King

[App page](https://appshunter.io/ios/app/logic-king-math-puzzles/id6754893822)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


### Calcudoku

[App page](https://appshunter.io/ios/app/calcudoku-math-logic-puzzles/id6772270032)

This logic puzzle game offers a unique approach to learning how to solve number grids. Instead of simply revealing answers, it provides intelligent, step-by-step guidance on logical strategies and note-taking to help you master the puzzles.

**Highlights:** Intelligent step-by-step explanations, Optional auto notes for cages, Intuitive note-taking interface, Variety of arithmetic operations, Grids for all skill levels, Offline-first architecture, Dark mode support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Logic King free?

Logic King is free to download, with in-app purchases available.

### Is Calcudoku free?

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

### Do Logic King or Calcudoku have ads?

Both Logic King and Calcudoku show ads.

### Which is updated more often, Logic King or Calcudoku?

Logic King ships an update every 10 days, and Calcudoku every 3 weeks. Most recently, Logic King was updated on October 25, 2026 and Calcudoku on October 25, 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.*