Based on the users' reviews of the Hexel Color Art by Number app, I've identified the following pros and cons: **Pros:** 1. "Fun and relaxing with beautiful results, easy to use and soothing music." (15 words) 2. "A great way to express creativity and relieve stress with stunning color combinations." (15 words) 3. "Enjoyable and engaging, perfect for artistic beginners and experienced artists alike." (15 words) **Cons:** 1. "Some colors don't match the intended result, frustrating and misleading." (15 words) 2. "Limited color palette and options, can become repetitive and boring." (15 words) 3. "Occasional crashes and glitches, requires frequent restarting and reloading." (15 words) Note: The reviews are subject to change, and this conclusion is based on the available reviews at the time of my knowledge cutoff.