# NinjaSudoku vs Calcudoku

The clearest difference is ads: NinjaSudoku at none against Calcudoku's shown. Calcudoku's advantage is update cadence (every 3 weeks vs every 52 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

NinjaSudoku ships an update every 52 months, Calcudoku every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | NinjaSudoku | 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 | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 52 months | **Every 3 weeks** |
| Monetization | — | Ad-supported |
| Size | 1 MB | 104 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Compiled](https://appshunter.io/developer/520829733) | [LogicSmith](https://appshunter.io/developer/6772270034) |

## What reviewers say

### NinjaSudoku

[App page](https://appshunter.io/ios/app/ninjasudoku/id1236311684)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 NinjaSudoku free?

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

### Is Calcudoku free?

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

### Do NinjaSudoku or Calcudoku have ads?

Calcudoku shows ads; NinjaSudoku does not.

### Which is updated more often, NinjaSudoku or Calcudoku?

NinjaSudoku ships an update every 52 months, and Calcudoku every 3 weeks. Most recently, NinjaSudoku was updated on November 2, 2026 and Calcudoku on October 31, 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.*