Fill-in Crossword Solver

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Content rating
Everyone
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Content rating
Everyone
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About this app

🧩 An auto-solver for fill-in (skeleton) crosswords.

Stuck on the last few squares of a newspaper or magazine crossword? Just place the
black cells, type in any letters you already know, and press Solve. The app finds a
way to fill the grid so that every across/down run is a real dictionary word.

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✨ Features
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🇯🇵 Japanese (hiragana) and 🇬🇧 English — switch with one tap.
🔢 Number hints: "same number = same letter" lets you constrain unknown cells.
🌗 Light / Dark / Auto theme.
📋 Multiple solutions? Browse candidates and pick one.

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🛠️ How to use
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1. Tap cells to place black squares (starts all black — turn cells white to make word slots)
2. Type any letters or numbers you know
3. Choose a dictionary and press Solve
4. View the answer; use ▲▼ to switch between candidates

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📖 Dictionaries
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Japanese has three sizes; English has three vocabulary levels (Everyday / Business /
Native). Dictionaries are fetched from an online server, so an internet connection is
required.

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💡 Great for
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• Crossword and skeleton-puzzle fans
• Getting a hint on a puzzle you're stuck on
• Checking answers when you build your own puzzles

A banner ad is shown, but all features are free to use. No in-app purchases.

Privacy Policy: http://www.sotafactory.net/privacy.html
Enter black cells and known letters — auto-solves fill-in crosswords.
Updated on
Sep 24, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

🧩 Initial release. Auto-solves Japanese/English fill-in crosswords. Number hints and dark mode supported.
Content rating
Everyone
Learn more

App support

About the developer
平野純二
sotafactory@gmail.com
稲口町4丁目19−9 603 春日井市, 愛知県 486-0905 Japan

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