# SUDOKU.Studio vs Theオセロ

The clearest difference is in-app purchases: Theオセロ at none against SUDOKU.Studio's 1. Theオセロ also leads on ads (none vs shown) and update cadence (every 6 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SUDOKU.Studio sells 1 one-off in-app purchase. Theオセロ asks for nothing beyond the download.

SUDOKU.Studio ships an update every 2 months, Theオセロ every 6 days. The most recent releases landed on October 14, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SUDOKU.Studio | Theオセロ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sudokustudio/id1464307870/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 157 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Works Inc.](https://appshunter.io/developer/1276087920) | [kazuki omori](https://appshunter.io/developer/1608167847) |

## What reviewers say

### SUDOKU.Studio

[App page](https://appshunter.io/ios/app/sudokustudio/id1464307870)

This app offers a wide range of Sudoku puzzles with adjustable difficulty levels for all skill sets. It includes helpful features like hints, error checking, and candidate number entry. Daily challenges and collectible emblems provide ongoing engagement.

**Highlights:** Adjustable difficulty levels, Hint function, Daily challenges with emblems, Candidate number entry, Mistake checking, Auto-save function, Time display

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示 | $7.99 | one-time |


### Theオセロ

[App page](https://appshunter.io/ios/app/the/id6474555742)

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

**In-app purchases:** none


## Frequently asked questions

### Is SUDOKU.Studio free?

SUDOKU.Studio is free to download, with in-app purchases available.

### Is Theオセロ free?

Theオセロ is free to download, with no in-app purchases.

### Do SUDOKU.Studio or Theオセロ have ads?

SUDOKU.Studio shows ads; Theオセロ does not.

### Which is updated more often, SUDOKU.Studio or Theオセロ?

SUDOKU.Studio ships an update every 2 months, and Theオセロ every 6 days. Most recently, SUDOKU.Studio was updated on October 14, 2026 and Theオセロ on October 23, 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.*