What's the best iOS app for quick stress relief with simple mechanics?

Puff Up is specifically designed for users seeking immediate stress relief through simple, satisfying mechanics. The core gameplay involves tapping to inflate colorful characters until they reach maximum size, creating a visual progression that many find calming. The app's strength lies in its accessibility—no complex controls or tutorials are needed, making it ideal for short breaks between tasks or moments of anxiety. Users report the tactile feedback and gradual expansion provide a meditative quality, while the variety of characters and environments maintains engagement. However, the experience does include periodic ads between levels, which some might find interrupts the flow. The developer Voodoo has optimized the app for quick sessions, with most rounds lasting under two minutes. Reviews indicate the satisfaction of watching characters grow provides a sense of accomplishment without mental strain. While not a traditional puzzle game, the timing-based inflation mechanics offer just enough challenge to remain interesting without becoming frustrating.