Based on the users' reviews on the Google Play Store, here are three cons and three pros for the Mechanical Watch Face app: **Cons:** 1. Limited customization options, users desire more flexibility with watch face design. 2. Some users experience compatibility issues with certain Android devices or watch models. 3. Occasionally, the app crashes or stops responding, which is frustrating for users. **Pros:** 1. Impressive visual design and animation, users love the detailed mechanical watch mechanism. 2. Easy to set up and use, even for those new to watch face customizations. 3. Unique and attractive watch faces that stand out from default Android options.