Based on the users' reviews on the App Store, here are three pros and three cons of the Cup Sort 3D app: **Pros:** 1. "Simple yet addictive puzzle game, easy to learn, challenging to master." 2. "Great way to exercise problem-solving skills, very relaxing and fun." 3. "Visuals are amazing, 3D cups are realistic and engaging." **Cons:** 1. "Some levels are frustratingly difficult, no hint system to help." 2. " Limited number of levels, gets repetitive after a while." 3. "Occasional crashes and glitches, needs stability improvements." Please note that these points are based on the feedback from users and are subject to change as more reviews come in.