Based on the users' reviews of the Ball Stretch app, here are three cons and pros: **Cons:** 1. "Disappointing experience. Ads are invasive and often crash the app." (15 words) 2. "Limited functionality. Users are disappointed with lack of customization options." (15 words) 3. "Occasional connectivity issues. Unable to login or sync data properly." (15 words) **Pros:** 1. "Useful for learning new exercises. Great workout routines for all levels." (15 words) 2. "Intuitive interface. Easy to navigate and understand even for beginners." (15 words) 3. "Motivating reminders keep me consistent. Love tracking my progress stats!" (15 words) Please note that these are general summaries based on a sample of user reviews, and may not reflect the overall opinions of all users.