Nonograms Katana

Name: Nonograms Katana
Rating: 4.737395 (196882 reviews)
Author: Ucdevs Interaction

By: Ucdevs Interaction

Nonograms Katana: Sharpen your mind!

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Features & Capabilities

Nonograms Katana: Sharpen your mind!

Nonograms Katana is a comprehensive and engaging Chrome extension that brings the classic picture logic puzzles known as nonograms, hanjie, picross, and Japanese crosswords to your browser. Featuring over 1001 free puzzles ranging from 5x5 to 50x50 grids, it challenges players to reveal hidden pictures by logically coloring cells based on numerical clues. All puzzles are computer-tested for unique solutions, ensuring a pure logic experience without guessing.

Key features include black-and-white and color puzzles, user-generated puzzles, nifty hints, marking tools, auto-saving, and customization options such as day/night modes and color schemes. Beyond puzzles, Nonograms Katana offers immersive gameplay with its Adventurers Guild expansion, rewarding players with loot, quests, and settlement rebuilding, and a turn-based RPG Dungeon expansion. The extension is optimized for phones and tablets, includes cloud save, achievements, leaderboards, and VIP features like ad-free play and extra hints. Dive into a captivating mix of logic puzzles and RPG adventure with Nonograms Katana!

User Growth & Download Statistics

Game Games Entertainment Education

By:

Ucdevs Interaction

Downloads:

7,586,900 1.89K

Rating:

4.74

(196,882) 56 new ratings

Version:

21.21 Last updated: 2026-05-20

Version code:

21210

Creation date:

2014-03-12

Publisher country:

Permissions:

android.permission.READ_EXTERNAL_STORAGE High risk
android.permission.WRITE_EXTERNAL_STORAGE High risk
com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.ACCESS_ADSERVICES_TOPICS Low risk
android.permission.FOREGROUND_SERVICE Low risk
android.permission.INTERNET Low risk
android.permission.WAKE_LOCK Low risk
com.android.vending.BILLING Low risk

Size:

19.51MB

Email:

uc*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-07

Compare stats and ranking:

Ranking

# 17,306 ▼ 17

Other platforms

Nonograms Katana (v13.120)

4.80

(6,592)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Ucdevs Interaction

Google Play Store

https://play.google.com/store/apps/details?id=com.ucdevs.jcross

Email:

uc*****@gmail.com

Website:

https://nonograms-katana.com

User Reviews

Users widely praise Nonograms Katana for its huge puzzle library (including user-made and varied difficulties), minimal ads, and engaging dungeon/guild mode that extends playtime. The app is lauded for a clean, intuitive UI with many customization options and strong longevity across devices. A few isolated downsides appear in reviews, such as missing sound effects, occasional popups (cookie/privacy) and some reports of upload or puzzle-generation issues, but the positive sentiment dominates.

Pros

Massive puzzle library with tons of puzzles including user-made ones and varied difficulties
Minimal, non-intrusive ads that don’t interrupt play
Engaging dungeon/guild mode that adds long-term, varied gameplay
Intuitive, user-friendly UI with extensive customization options
Strong long-term appeal and cross-device play

Cons

Recent reviews

The game is as perfect as it can be.

Tr*****, 2026-06-02

i don't know how this could possibly have less than a 4.9 rating! it's 5 for me for its very customizable, unintrusive ads or (ad free if you've supported the app as I have) experience with an abundance of free puzzles (in black and white and in color). I've come back to this app time and time again for a few years now and always appreciate my time spent actually relaxing while i exercise my brain a little bit. Please play this app if you're a huge fan of nonograms, you won't be disappointed!