# CRAZY DRIVER vs SudokuOS

The clearest difference is update cadence: SudokuOS at every 4 days against CRAZY DRIVER's every 2 months. CRAZY DRIVER's advantage is iOS requirement (10.0 vs 18.0). 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.

CRAZY DRIVER ships an update every 2 months, SudokuOS every 4 days. Both last shipped on November 11, 2026.

## The numbers

| Metric | CRAZY DRIVER | SudokuOS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 77.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | — | Free |
| Size | 212 MB | 10 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [rudy games](https://appshunter.io/developer/1106629301) | [Seidelapps](https://appshunter.io/developer/6819037694) |

## What reviewers say

### CRAZY DRIVER

[App page](https://appshunter.io/ios/app/crazy-driver/id1535432091)

**Features:** Vision Pro support

**In-app purchases:** none


### SudokuOS

[App page](https://appshunter.io/ios/app/sudokuos/id6819037692)

Solve Sudoku puzzles with five difficulty levels on your iPhone or iPad. Utilize notes, candidates, hints, and an erase function. Track your progress with ratings and charts, and enjoy automatic saving for uninterrupted gameplay.

**Highlights:** Five difficulty levels, Notes and candidate filling, Hint and erase functions, Progress tracking and rating, Automatic game saving, Customizable accent colors and haptics

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

**In-app purchases:** none


## Frequently asked questions

### Is CRAZY DRIVER free?

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

### Is SudokuOS free?

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

### Do CRAZY DRIVER or SudokuOS have ads?

Neither CRAZY DRIVER nor SudokuOS shows ads.

### Which is updated more often, CRAZY DRIVER or SudokuOS?

CRAZY DRIVER ships an update every 2 months, and SudokuOS every 4 days. Most recently, CRAZY DRIVER was updated on November 11, 2026 and SudokuOS on November 11, 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.*