# Futoshiki 101 vs Shikaku

The clearest difference is review sentiment: Shikaku at 76% against Futoshiki 101's 0%. Shikaku also leads on rating (4.4 vs 1.0) and in-app purchases (none vs 1). Futoshiki 101's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Futoshiki 101 sells 1 one-off in-app purchase. Shikaku asks for nothing beyond the download.

Shikaku holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Shikaku has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Futoshiki 101's written reviews are positive against 76% of Shikaku's.

Futoshiki 101 ships an update monthly, Shikaku every 3 weeks. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Futoshiki 101 | Shikaku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (3 ratings)](https://appshunter.io/ios/app/futoshiki-101/id1403829103/reviews) | **[4.4 (16 ratings)](https://appshunter.io/ios/app/shikaku-rectangles/id6759557296/reviews)** |
| Number of ratings | 3 | **16** |
| Positive reviews | 0.0% of reviews | **76.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 29 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mesmotronic](https://appshunter.io/developer/480143689) | [BRIDGE DIGITAL EUROPE LIMITED](https://appshunter.io/developer/1782316772) |

## What reviewers say

### Futoshiki 101

[App page](https://appshunter.io/ios/app/futoshiki-101/id1403829103)

Challenge your logic with over 100 Sudoku-style number puzzles. Arrange numbers 1-5 in rows and columns while adhering to greater-than/less-than constraints between adjacent numbers. Features pencil mode for notes and mistake highlighting.

**Highlights:** 101 increasingly difficult puzzles, Sudoku-style number arrangement, Greater-than/less-than constraints, Pencil mode for notes, Mistake highlighting, 5 difficulty levels

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove adverts | $1.99 | one-time |


### Shikaku

[App page](https://appshunter.io/ios/app/shikaku-rectangles/id6759557296)

Engage in a minimalist logic puzzle game where you divide a grid into rectangular pieces. Each piece must contain a number representing its total area. Enjoy daily challenges, endless modes, and customizable themes.

**Highlights:** Grid division logic puzzles, Daily puzzle chapters, Infinite puzzle generation, Customizable themes, XP system for mastery, Ad-free experience

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

**In-app purchases:** none


## Frequently asked questions

### Is Futoshiki 101 free?

Futoshiki 101 is free to download, with in-app purchases available.

### Is Shikaku free?

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

### Which has better reviews, Futoshiki 101 or Shikaku?

Shikaku is rated higher. Futoshiki 101 averages 1.0 out of 5 from 3 ratings, while Shikaku averages 4.4 from 16 ratings.

### Do Futoshiki 101 or Shikaku have ads?

Neither Futoshiki 101 nor Shikaku shows ads.

### Which is updated more often, Futoshiki 101 or Shikaku?

Futoshiki 101 ships an update monthly, and Shikaku every 3 weeks. Most recently, Futoshiki 101 was updated on October 29, 2026 and Shikaku on October 21, 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.*