Based on the user reviews, here are three pros and three cons of the app "Level17" in 15 words or less: Pros: * "Addictive game that challenges my hand-eye coordination and reaction time nicely." (5/5 stars) * "The concept is unique, and the graphics are colorful and fun to play." (4/5 stars) * "I love the increasing difficulty level, keeps me engaged and motivated to play." (4/5 stars) Cons: * "The game is too short, wanting more levels and challenges after completing them." (3/5 stars) * "The controls can be unresponsive at times, frustrating when you're on a roll." (2/5 stars) * "The ads can be annoying, would prefer a ad-free version for a fee." (3/5 stars) Note: The ratings and quotes are taken from the user reviews on the Apple App Store and may change over time.