Apps by WANG JIN OH
Ruffdoku: Queens Logic Puzzle app icon

Games

Ruffdoku: Queens Logic Puzzle

WANG JIN OH

Free download In-app purchases unconfirmed
Open on Apple

About this app

Cat person or dog person? Either way, Ruffdoku is your new daily logic fix. Place exactly one adorable pet on the board so that every color region, every row, and every column has just one — and no two pets ever touch, not even diagonally. Every puzzle is solvable by pure logic. No guessing, no luck — just the satisfying click of deduction. • A fresh DAILY CHALLENGE every day — build your streak and earn Perfect Solve badges • 100 hand-crafted LEVELS that grow from cozy 4×4 boards to brain-bending 10×10 • Pick your side: Team Meow or Team Woof — switch anytime • Mind your treats: three per puzzle, lose one for every wrong placement • Beautiful, share-worthy result cards to show off your solve • Quick to learn, hard to put down — perfect for a coffee break No sign-up. No clutter. Just you, the board, and very good pets. Can you keep your daily streak alive? Start solving.

Latest release

What’s New

Version 1.5.0 Aug 22, 2026

Your daily Ruffdoku is now the main event: - Open straight into one shared Daily Challenge, with a fresh puzzle every day. - Build your daily streak and see when tomorrow's puzzle arrives. - Optional reminders help you return for the next challenge. - Replay after clearing to improve your personal best without changing your official result. - The first three Daily clears remain ad-free. Thanks for playing!

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Sep 7, 2026 · 0 ratings Sep 7, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free 0×
Price history
Current Free
Free Sep 7, 2026 · Free Sep 7, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 7, 2026 · 7:55 PM Free

Screenshots

Ruffdoku: Queens Logic Puzzle iPhone screenshotRuffdoku: Queens Logic Puzzle iPhone screenshotRuffdoku: Queens Logic Puzzle iPhone screenshotRuffdoku: Queens Logic Puzzle iPhone screenshotRuffdoku: Queens Logic Puzzle iPhone screenshot