Based on the users' reviews, here are three pros and three cons of the "Roll a Color" app: **Pros:** 1. Users praise the app's simplicity and ease of use, saying it's "intuitive" and "fun". 2. Many reviewers appreciate the app's calming and relaxing effects, calling it "meditative" and "soothing". 3. Some users enjoy the app's ability to help them focus and reduce stress, describing it as "helpful" and "calming". **Cons:** 1. Some users find the app's lack of customization options frustrating, saying it's "too limited" and "not enough". 2. A few reviewers experience technical issues, such as glitches and crashes, which can be "annoying" and "disruptive". 3. A few users feel the app's limited features and short duration of color rolls make it "not worth the money" and "overpriced".