Based on the users' reviews on the App Store, here are three pros and three cons of the "Stack n Balance" app: **Pros:** 1. Users praise the app's addictive gameplay and increasing difficulty levels. "Increably engaging and challenging, can't stop playing!" 2. The app's simple yet effective design is commended by many users. "Easy to use, yet challenging to master, perfect balance!" 3. Customers appreciate the app's ability to improve their attention and focus. "Helps improve concentration and mental agility, great tool!" **Cons:** 1. Some users find the app's reward system too limited and unengaging. "No rewards or leaderboards, gets boring quickly." 2. A few customers experience issues with the app's responsiveness and lag. "Occasional lag and poor multitasking, frustrating experience." 3. A handful of users feel the app's level design is too repetitive and lacks variety. "Too much repetition, needs more level variety and surprises."