LogiSketch
Professional Nonogram puzzles
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
New in 1.1: custom color schemes, colorblind-friendly palettes, full accessibility font support, smarter hints with explanations, live cell counts, and haptic controls.
LogiSketch — Nonogram Logic Puzzles
Reveal hidden pictures one deduction at a time. LogiSketch is a beautifully crafted nonogram app (also known as Picross, Griddlers, Hanjie, and Paint by Numbers) built for players who love pure logic — from your very first puzzle to brain-bending marathons.
A MASSIVE LIBRARY, FROM TINY TO GIGANTIC
Start with quick, bite-sized grids and work your way up to sprawling, gigantic puzzles that unfold like real artwork. With hundreds of hand-curated puzzles across dozens of themed galleries, you will never run out of challenges. Whether you have two minutes or two hours, there is always a perfect puzzle waiting.
NO ADS. EVER.
We hate interruptions as much as you do. LogiSketch has zero ads — no banners, no pop-ups, no timers begging you to watch a video. Instead, you buy only the galleries you want at a fair, honest price. Own them forever (and they are all family share)
PLAY ANYWHERE, NO WIFI REQUIRED
Because there are no ads to load, LogiSketch works completely offline. Solve on a plane, on the subway, in the mountains, or anywhere with no signal. Your puzzles and progress are always right there, ready when you are.
TRUE DIFFICULTY, RATED THE RIGHT WAY
Most nonogram apps just call a big grid "hard." We do it properly. Every LogiSketch puzzle is analyzed by our solving engine and rated by the actual reasoning required to solve it:
• Intuitive — learn the ropes with straightforward, satisfying deductions.
• Logical — master the classic overlap technique and line-by-line reasoning.
• Analytical — tackle puzzles that demand trial placements, contradiction arguments, and thinking several rows and columns ahead.
A small grid can be fiendishly clever, and a big one can be a relaxing breeze. Now the rating finally tells you the truth.
TOOLS FOR THE SERIOUS SOLVER
LogiSketch respects expert players:
• Q-marks let you record "maybe" hypotheses for advanced analytical reasoning, so you can explore possibilities without losing your place.
• Extra gestures speed up filling, marking, and navigating — pinch-to-select, swipe-fill, row and column locking, and more.
• Solve enormous puzzles your way: as one epic whole, or broken into manageable panels you complete one section at a time.
Every control is designed to keep you in flow, not fighting the interface.
COLOR AND CLASSIC BLACK & WHITE
Enjoy timeless black-and-white logic puzzles, or dive into rich, full-color nonograms where each clue is tinted to its color. Color puzzles add a whole new dimension of strategy — including flexible spacing rules between different colors — and reward you with vibrant pixel-art images when you finish.
HINTS AND TIPS WHEN YOU WANT THEM
Stuck on a tricky line? A gentle hint will nudge you in the right direction without spoiling the fun, and helpful tips teach you the techniques the pros use. Prefer a challenge with stakes? Try Survivor mode, where careful play matters and every move counts. However you like to play, LogiSketch adapts to you.
WHY PLAYERS LOVE LOGISKETCH
• Hundreds of professionally designed puzzles, from tiny to gigantic.
• Honest, genuine difficulty ratings based on solving methodology — not just grid size.
• No ads and no internet required.
• Buy only the galleries you want, and keep them forever.
• Both color and black-and-white puzzles.
• Advanced Q-marks, expert gestures, and panel solving for big grids.
• Built-in hints, tips, and an interactive tutorial to sharpen your skills.
• Clean, elegant design that looks stunning in light and dark mode.
Nonograms are more than a pastime — they are a workout for your brain, a moment of calm focus, and a spark of that "aha!" satisfaction every time a picture appears. Whether you are a curious beginner or a seasoned puzzle veteran hunting for a real challenge, LogiSketch gives you the deepest, most respectful nonogram experience on the App Store.
Download LogiSketch today, pick a gallery, and start uncovering pictures with pure logic.
Ratings & Reviews
Version 1.1 brings improved accessibility, smarter solving tools, and a batch of fixes and content updates.
ACCESSIBILITY & VISUALS
- New custom color schemes, including palettes designed to be friendly for color-blind players
- Full support for large accessibility font sizes throughout the app
- New X-mark option for marking rectangle fills in black & white puzzles
SOLVING TOOLS
- New hint type that explains the reasoning behind the suggested move, not just the move itself
- Live count of cells completed while you solve
- Rectangle size now displays while pinching out to fill an area
- Milemarkers now shown on every 5th row/column line while scrolling, making it easier to count cells
QUALITY OF LIFE
- Haptics can now be turned on or off in Settings
- Ability to email a puzzle directly for support requests
CONTENT
- Several existing galleries expanded with new puzzles
- Filled in missing puzzle descriptions and image attributions
FIXES
- Fixed the Museum Guide list snapping back to the top while scrolling
Thanks for playing LogiSketch! As always, we'd love to hear your feedback.
The developer, squishLogic, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- squishLogic LLC
- Size
- 284.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tree of Life $3.99
- Church Architecture Gallery $2.99
- Universal Gallery $19.99
- Waterfowl Gallery $1.99
- United States Geography $0.99
- US Presidents Gallery $1.99
- Transportation Gallery $1.99
- Plants Gallery $1.99
- Noir Wilds Gallery $1.99
- Musical Instruments Gallery $0.99
- Copyright
- © 2026 squishLogic LLC
