# Twindoku — Logic Game

> Pure logic grid puzzle with unique rules and provable solutions. (iPhone/iPad app by Oakever Games.)

- Source: https://appshunter.io/ios/app/twindoku/id6806900906 (this page in markdown: same URL + `.md`)
- Developer: [Oakever Games](https://appshunter.io/developer/1658671470)
- Category: Games, Casual, Puzzle
- Price: Free
- Rating: 4.30/5 from 6 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 165 MB
- Languages: American English, Afrikaans, Amharic, Arabic, Azerbaijani, Belarusian, Bangla, Bosnian, Khmer, Catalan and 52 more
- Released: 2026-09-24
- Data updated: 2026-10-11
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/twindoku/id6806900906/reviews.md

## What is Twindoku?

Two symbols. One answer. No guessing, ever.

Twindoku is a pure logic puzzle. Fill each square of the grid with a sun or a moon until the board satisfies every rule the level lists. Every rule in play is printed above the board, so nothing is hidden and nothing is left to luck.

ONE ANSWER, ALWAYS REACHABLE
Each level has exactly one valid solution, and at any point in a solve there is at least one square you can prove from the rules in front of you. You never guess, and you never have to undo a wrong branch. The cells that come pre-filled are your starting foothold.

THE BASICS TAKE TWO TAPS
Tap an empty square and a picker opens right where you tapped; choose a sun or a moon, tap again to switch.
- Balance: each row and column holds the same number of suns and moons -- 3 and 3 on a 6x6 grid, 4 and 4 on 8x8.
- No three in a row: never three of the same symbol side by side, across or down. Diagonals do not count.

THEN THE RULES START STACKING
From level 3 on, every puzzle adds one or two more rules over the basics:
- Equal and cross markers: two neighboring cells that must match, or must be opposite.
- Color regions: each colored area needs its suns and moons balanced too.
- Blocked cells: cannot be filled, do not count for their row or column, and break up a run.
- Edge numbers: which cell holds the first sun of that row or column.
- Junction numbers: how many suns sit in the 2x2 block around the number. A 0 or a 4 decides four cells at once.
- Boards that are not square: diamonds, fat crosses, hearts, bow ties, octagons, window frames. Outside the outline is background -- untappable, uncounted.

HINTS THAT TEACH
The hint tool finds a square that can be proven right now, highlights it, and explains the deduction -- which rule, and what on the board makes it certain. You read the reasoning, then press Apply. You keep the technique.

MISTAKES ARE NOT THE END
Three hearts per level. A wrong symbol costs one heart and names the rule it broke. Out of hearts, revive to get them back with your last move undone, or restart the level clean. There is no dead end, so you can stay with a grid until it cracks.

GOOD FIT IF YOU LIKE
Sudoku, Binairo, Takuzu, Binoxxo, binary puzzles, Nonogram, Kakuro, or any brain teaser you finish by reasoning instead of luck.

Fill every square, satisfy every rule, and the board solves itself.

## Key features

- Pure logic puzzle gameplay
- Provable solutions, no guessing
- Progressive rule stacking
- Interactive hints with explanations
- Mistake system with hearts
- Varied grid shapes

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/twindoku/id6806900906/reviews.md

### 1/5 — 5 star game 1 star experience

*2026-10-04*

Amazing game and fun and well made app, but an ad that is obnoxiously long after every level and no option to remove ads just gets frustrating. This was my favorite game because I like the linkedin version, but the ads got too much so I deleted.

**Developer response:** We apologize for any inconvenience caused. Ads, being vital for sustaining free-to-play games, help us enhance the game's quality. We're actively working on adjusting ad frequency and duration for minimal disruption. Please ensure your app is updated to experience these improvements.

## Frequently asked questions about Twindoku

### What is Twindoku?

Twindoku is a pure logic puzzle game where players fill a grid with two symbols, sun or moon, to satisfy a set of rules. The game emphasizes deduction and guarantees a single, reachable solution for each level.

### Does Twindoku have ads?

Yes, Twindoku contains advertisements. As a free-to-play game, ads are used to support its development and availability.

### How does the hint system in Twindoku work?

The hint tool in Twindoku identifies a square that can be proven at that moment. It highlights the square and provides a step-by-step explanation of the deduction, teaching the player the reasoning behind the solution.

### What happens if I make a mistake in Twindoku?

Making a mistake in Twindoku costs one heart and identifies the rule that was broken. Players have three hearts per level, and can revive to get hearts back with their last move undone or restart the level.

### Can I play Twindoku offline?

The provided data does not specify if Twindoku supports offline play. Typically, logic puzzle games of this nature can be played without an internet connection once downloaded.

### What kind of puzzles does Twindoku offer?

Twindoku offers a variety of logic puzzles that start with basic rules like balance and no three in a row, and progressively add more complex rules such as color regions, blocked cells, and junction numbers. It also features non-square grid shapes.

### What is the age rating for Twindoku?

Twindoku has an age rating of 4+, making it suitable for young children and players of all ages interested in logic puzzles.

### How often is Twindoku updated?

The latest version of Twindoku is 1.0.1, last updated on September 30, 2026. While this is the initial update, future updates will likely depend on player feedback and new content development.

## Version history (last 2 releases)

### 1.0.1 — 2026-09-30

◆ Feature updates. 
◆ Performance improvements.

### 1.0.0 — 2026-09-24

No release notes.

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## More apps by Oakever Games

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- [Sudoku - Brain Puzzle Games](https://appshunter.io/ios/app/sudoku-brain-puzzle-games/id1442749804)
- [Wood Block Puzzle Games](https://appshunter.io/ios/app/wood-block-puzzle-games/id1466197423)

All apps by Oakever Games: https://appshunter.io/developer/1658671470

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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 2026-10-11.*