Based on the users' reviews, here are three cons and pros of the ColorFill Roller app, each summarized in 15 words or less: **Cons:** 1. "Frustrating experience with ads and in-app purchases everywhere, disrupting creative flow." 2. "Lack of customization options and limited color palette limitations creative freedom." 3. "App frequently crashes and freezes, causing lost work and wasted time." **Pros:** 1. "Intuitive UI and easy-to-use interface make it perfect for digital painting beginners." 2. "Surprisingly realistic brush simulations and textured effects for authentic artistic results." 3. "Mobile-first design allows for seamless drawing and painting on-the-go experiences." Please note that these summaries are based on the reviews available on the App Store and may not reflect the opinions of all users.