# Shikaku — Logic Puzzle — Divide the grid. One answer.

> Divide the grid. One answer. (iPhone/iPad app by MATTHEW DAVID BREMNER.)

- Source: https://appshunter.io/ios/app/shikaku-logic-puzzle/id6795003924 (this page in markdown: same URL + `.md`)
- Developer: [MATTHEW DAVID BREMNER](https://appshunter.io/developer/6795003926)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-08-06
- Data updated: 2026-10-31

## What is Shikaku?

Shikaku is a logic puzzle with one rule.

Divide the grid into rectangles. Every rectangle holds exactly one number, and that number is how many squares it covers. Cover the whole grid and the puzzle is solved.

That is the entire rulebook. There is no tutorial to sit through — the first boards are small enough that the answer is nearly visible, and by level ten you are genuinely working.

ONE ANSWER, ALWAYS
Every board is checked for a unique solution before you ever see it. There is never a moment where you have to guess and hope. Anything you can work out, you can prove.

IT CATCHES THE MOVE THAT BROKE IT
A rectangle can obey every rule and still make the rest of the puzzle impossible — leaving a number with nowhere to go, or a square nothing can reach. Shikaku tells you at the move that caused it, instead of letting you discover it twenty moves later with no idea where it went wrong.

MISTAKES COST SOMETHING. FUMBLES DO NOT.
Dragging across a rectangle you already placed is a mis-swipe, not an error, and costs nothing. Change your mind mid-drag, come back to where you started and let go — that cancels, free. Only real reasoning errors count against you. Three per puzzle.

SEVEN DIFFICULTIES
Gentle, Easy, Medium, Hard, Expert, Master and Grandmaster. The hard tiers are not simply bigger boards — a Grandmaster puzzle has fewer, larger rectangles and far less that can be read off at a glance. It is close to pure deduction.

WRITE DOWN WHAT YOU KNOW
Switch to marking and drag across the line between two squares to note that they belong in the same rectangle. A mark is a note to yourself and nothing more: the game never checks one against the answer, and marking costs nothing. On a hard board it is how you keep hold of what you have already proved.

A NEW PUZZLE EVERY DAY
The Daily Challenge is free forever. Keep it up for seven days running and you earn hints. A calendar shows every day you have played, and a day you missed can still be played. It will not mend a streak, but it is there.

THREE THEMES
Midnight, Slate & Teal, and Forest & Brass. Switch whenever you like.

THIS WEEK
One weekly board, and it resets every Sunday. It lives on your device, so there is no sign-in, no account and nothing to join — it simply works. The twelve names beside yours are the game's own rivals, marked as rivals on every row, and they do not wait for you.

FRAMES YOU EARN
Eight frames for your avatar, each one evidence of something you actually did: a seven-day Daily streak, a hundred puzzles solved, a Grandmaster board, a week finished in the top three. They show on the weekly board, and the rivals wear theirs too.

YOUR PROGRESS IS YOURS
Put it down mid-puzzle and it is exactly where you left it. Your progress lives on your device, and there is no account to make.

WHAT IS FREE AND WHAT IS NOT
Shikaku is free to play, with every level and every tier, and the Daily Challenge is free forever. Ads are how it pays for itself: a banner on the home, calendar, leaderboard and game screens, an occasional full-screen ad between levels, and optional videos for a hint or a second chance. One payment removes them for good and unlocks every theme.

No subscription. No account. No lives, no timers, and nothing to wait for.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Game | $2.99 | one-time |
| 3 Hints | $0.49 | one-time |


## Is Shikaku safe?

Not enough ratings yet to assess Shikaku.

## Is Shikaku legit?

Shikaku — Logic Puzzle has limited verification signals. The AppsHunter Legitimacy Score for Shikaku is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 2.0 — 2026-10-10

Shikaku is now free. Every level and every difficulty, with no paywall — supported by ads, with one payment to remove them and unlock every theme.

Already bought the full game? You have Remove Ads: nothing changes for you.

New: run out of pencils and you can keep the board with one more.

### 1.2 — 2026-09-25

Mark the line between two squares to note that they belong together, a
place to put the reasoning hard boards turn on. The Daily now keeps a
calendar, and a day you missed can still be played. Eight avatar frames to
earn, from a seven-day streak to winning a week. And the weekly board has
moved to the middle of the home screen, with the rival just ahead of you.

### 1.1 — 2026-08-19

Scoring now rewards a clean solve, not a fast one, finish with pencils in
hand and it shows. There's a weekly leaderboard that resets every Sunday,
so it's a fresh contest each week. Grandmaster puzzles turn up more often
the further you get.

### 1.0 — 2026-08-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*