CT Lite+ vs Hidloo

Puzzle helps to learn Cartesian coordinate system (x,y) and practice to calculate sums over the line (the very first step to understanding integration). Sound: switch Ring/Silent controls speaker. After 30 seconds quick shake to restart the puzzle or reveal the answer with just a tap. In Gradients puzzle each cell has a value that contributes to the sum when calculated along a row or a column. Additionally, the value of each cell depends on the direction of the summation ("anisotropic field"). Sometimes, the clues can be satisfied by different pattern of orange cells. This means that, without additional information, solving the puzzle may involve a guessing step. An interesting phenomenon is the formation of "isomers", where an alternative solutions can be created by inverting a subset of cells. When playing for fun, any of the isomers is considered a valid solution. However in Competition mode, one more clue is added: a sum along the main diagonal. This additional clue helps distinguish between isomers.

Hide a tiny figure in a photo of your own. Share a six-character code. Your friend gets thirty seconds and three taps to find it. That is the whole game, and it fits in a coffee break. HIDE IT Take a photo of anything — your street, your desk, your dog asleep on the sofa. Drop in a ladybug, a paperclip, a rubber duck. Turn it, shrink it, blend it into the colours underneath until it belongs there. Hidloo shows you exactly what your friend will see before you send it. SHARE IT You get a six-character code and a link. Send it anywhere — a message, a group chat, a story. Whoever opens it plays straight away. They do not need an account, and they do not need to have played before. FIND IT Thirty seconds. Three taps. One hint that tells you how warm you are but never which way to go. Every wrong tap is one you do not get back. THE PART THAT KEEPS IT GOING A good hide is not one nobody can find — it is one that is *barely* found. You score most when somebody finds your figure with the clock nearly out, so hiding a two-pixel sliver behind a curtain wins you nothing. Miss it and your friend can throw something at you: a water balloon, a tomato, a volley of eggs, a cake, a bucket of slime. Then it is your turn to hide one back. ALSO IN HERE - Ranks from Rookie to Legend, and badges you did not know you were chasing - A leaderboard you can search, so you can find anyone without scrolling - Daily streaks, and a nudge before you lose one - A miss map showing every wrong tap everyone made on your photo - A result card built to be shared with people who have never heard of Hidloo - Full Spanish and English HIDLOO PRO Eight figures are free forever. Pro unlocks the rest — twenty-eight more across eight themed packs — as a single purchase. No subscription, no consumables, no timers, no ads. Hidloo has no advertising, no advertising identifiers, and does not sell anything about you. Challenges delete themselves after thirty days.