CleanSort vs HiddenForm

No ads, no pop-ups, no "watch a video to continue." No fake currency. No timers pressuring you. No puzzle secretly rigged to be unsolvable so you'll watch a rescue ad. CleanSort is ball sort the way it should have been all along — a calm, honest color-sorting puzzle you can play on a plane, hand to a kid, or share with a friend, without anyone trying to sell you something or interrupt your train of thought. WHAT MAKES IT CLEAN - No ads, ever. Not between levels, not on restart, not mid-puzzle — and not a banner parked at the bottom of the screen. None. - No in-app purchases, no subscriptions, no "premium." The whole app is yours. - Every new deal is guaranteed solvable — checked by a built-in solver before you ever see it. You'll never be handed an impossible puzzle. - Works fully offline. No account, no sign-in, no tracking. BUILT FOR PEOPLE WHO ACTUALLY LIKE THE GAME - Unlimited undo — take back as many moves as you want, no penalty, no watching anything. - Optional hints when you're stuck — and a hint is the real answer: the first move of a shortest solution, not a guess. (Games you needed a hint on don't count as clean wins. Fair's fair.) - The grudge list: needed a hint? That deal is remembered. Rematch it any time — beat it without help, and the grudge is redeemed. - Bookmarks: mark a position you're unsure about, experiment freely, and jump straight back. - Smart pours: a run of same-colored balls moves together in one move, the way the puzzle really works. SHARE PUZZLES WITH FRIENDS AND FAMILY Every deal has a short shareable code. Send a fiendish one to a friend, or compare how you each cracked the same puzzle. WHY IT EXISTS I got tired of ball sort apps stuffed with ads and dark patterns, and I wanted my own kids to have a clean one. So I made it, and I'm sharing it. That's the whole story. Bugs, ideas, or a deal code that deserves to be framed: dev@stevepetersen.net

Make room for wonder with HiddenForm: a collection of richly illustrated silhouette puzzles for iPhone and iPad. Build lions, hummingbirds, trees, cats, dogs and more from uniquely shaped pieces. Discover tiny animals and botanical shapes hidden among the cuts, and follow the artwork's natural outline instead of a rectangular border. A TABLE OF YOUR OWN • Choose 24, 48 or 80 pieces. • Explore sculpted 3D wood or plexiglass pieces with rounded edges and tactile connection sounds. • Assemble anywhere on a spacious landscape table. Move connected sections together, pinch to zoom, and use two fingers to tilt and rotate. • Feel magnetic connections as matching pieces snap together. • Open the reference painting, emphasize outer edges, or highlight a matching pair when you want a little help. • Start in fullscreen with the controls tucked away. A FINISH WORTH ENJOYING Celebrate the final connection with a playful, material-inspired reveal. Then zoom into your finished painting and explore its details. Your puzzle progress saves on your device so you can return later. THREE FREE FAVORITES Lion, elephant and zebra are always included. Watch a rewarded video before starting or restarting any additional puzzle, or make a one-time Remove All Ads purchase to play the full collection without videos. No subscription is required. An internet connection is needed for rewarded videos and purchases. No game account is required. Requires iOS or iPadOS 26 or later. Follow @hiddenformpuzzles