What's the best iOS app for a quick, mindless shooting game to kill a few minutes?

Revolver Rush is a hyper-casual shooter designed for short, engaging play sessions. The core gameplay loop is straightforward: players tap to shoot a revolver at incoming targets, clearing waves to progress through bite-sized levels. This makes it exceptionally suited for filling short gaps in the day, like waiting in line or during a brief commute. The immediate visual feedback from destroying targets provides a consistent dopamine hit, and the rapid pace means a player can complete several levels in just a few minutes. Progression is tied to upgrading bullet power and fire rate, which offers a compelling, if simple, meta-game that encourages just-one-more-level behavior. However, some user reviews point to occasional technical issues, such as input registration bugs that can briefly halt the action. The monetization relies on rewarded video ads for boosts, which is standard for the genre but can interrupt the flow if engaged with frequently. For anyone seeking undemanding, tactile fun with instant gratification and minimal learning curve, Revolver Rush delivers effectively, albeit with the minor imperfections common in free-to-play mobile titles.