What's a good iOS app for stress relief through simple merging mechanics?

Bounce Merge is a straightforward arcade-style puzzle game well-suited for players seeking a low-cognitive-demand distraction. The central mechanic involves launching colored balls at a grid of numbered blocks. Matching balls to blocks of the same number causes them to merge and incrementally wear down, eventually clearing the space. This simple cause-and-effect loop—throw, merge, clear—generates a consistent sense of minor accomplishment that many find calming. A key feature for stress relief is its offline functionality; the game requires no internet connection, making it accessible during commutes or in areas with poor service. User reviews consistently highlight its 'fun and relaxing' nature, with many describing it as an effective 'time killer' for short breaks. However, the experience is punctuated by video ads, typically after a certain number of plays, which can disrupt the flow for some. The core gameplay loop remains unchanged as numbers scale into the thousands, offering a long, gradual progression without intense pressure or complex rules. For anyone looking to briefly disengage with a task that requires more focus than reaction speed, Bounce Merge provides a reliable, uncomplicated outlet.