Based on the user reviews of the "Stain Hacker" app, here are three cons and three pros in 15 words or less per item: **Cons:** 1. Some users find the app's stain removal tools "hit or miss" and not always effective. 2. The interface can be cluttered and overwhelming for some users, leading to frustration. 3. A few users report experiencing occasional app crashes and freezing issues. **Pros:** 1. Users praise the app's wide range of stain removal techniques and tutorials. 2. Many find the app's user-friendly interface and step-by-step guides helpful and intuitive. 3. The app's ability to identify and remove common household stains is a major selling point. Please note that these conclusions are based on a general analysis of the user reviews on the Apple App Store and may not reflect the full range of opinions and experiences.