This is a lightweight sorting puzzle game: in each row, you can only select adjacent colored blocks to swap and arrange them in the correct order. In number mode, the blocks are arranged from smallest to largest value; in rainbow mode, they are arranged from left to right according to a fixed color order. The game offers multiple gameplay modes: classic sorting, timed sprint, move limit, training levels, daily challenges, and warm-up battles, with difficulty gradually increasing from single-row to multi-row and multi-column. In-game, you can view the number of swaps and the optimal move count, and it supports undo, reset, and smart hints; after completing a level, you will receive a star rating, and you can view your achievements and historical scores on the record page.
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 4 screenshots above are PivotRow Daily's answers to those questions — they're public, they're real, and they made it through Apple's review.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Book apps approach the same problem? Browse more Book apps in the showcase.
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