CONTACT

Get in touch.

GridJoy is a one-person project. There's no support queue — just a developer who reads everything.

BUG REPORTS

Leave a review on Google Play →

The fastest way to flag a bug is a Play Store review — it appears in the developer console immediately. Describe what happened, which puzzle type, and which device if you know it. Every review is read.

FEEDBACK + FEATURE REQUESTS

gridjoypuzzles@gmail.com

For anything that doesn't fit a review — feature ideas, partnership questions, press enquiries, or just saying hello. Response times vary but nothing goes unread. Writing about GridJoy? The press kit has the fact sheet and reusable screenshots.

COMMON QUESTIONS

Check the FAQ first →

Questions about offline play, cosmetics, the ghost system, progression, or ads are almost certainly answered there.

FREE ON ANDROID — NO SETUP REQUIRED

FREE ON GOOGLE PLAY →

body { background: #0a0c14; color: #e2e8f0; font-family: system-ui, sans-serif; margin: 0; } .ns-wrap { max-width: 640px; margin: 0 auto; padding: 4rem 2rem; } .ns-brand { font-size: 3rem; font-weight: 900; color: #b07aff; margin-bottom: 0.5rem; } .ns-tag { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.3em; color: #b07aff; text-transform: uppercase; margin-bottom: 2rem; } .ns-desc { font-size: 1.1rem; color: #94a3b8; line-height: 1.7; margin-bottom: 2.5rem; } .ns-types { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem; margin-bottom: 2.5rem; } .ns-type { background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.06); border-radius: 10px; padding: 0.6rem 0.8rem; font-size: 0.8rem; font-weight: 600; color: #cbd5e1; } .ns-free { background: #b07aff; color: #fff; font-weight: 800; font-size: 0.85rem; letter-spacing: 0.15em; text-transform: uppercase; display: inline-block; padding: 0.9rem 2rem; border-radius: 12px; text-decoration: none; margin-bottom: 1.5rem; } .ns-perks { display: flex; gap: 1.5rem; font-size: 0.75rem; color: #64748b; flex-wrap: wrap; } .ns-perks span::before { content: "✓ "; color: #4ecdc4; }

GridJoy

18 number puzzle types · Free on Android

A calm collection of number puzzles with a ghost companion that grows with you. Sudoku, Kakuro, Calcudoku, Hex Mazes, Killer Sudoku, and 13 more — all generated fresh, all free, no ads anywhere.

Sudoku

Calcudoku

Kakuro

Killer Sudoku

Hex Mazes

Skyscraper

Hitori

Takuzu

Shikaku

Sumplete

Starlink

+ 7 more

Free on Android — Get it on Google Play

Daily challenges No paywalls Works offline No ads, anywhere