Based on the user reviews, here are three pros and three cons of the Bolt Stacker app: **Pros:** 1. Users praise the app's simplicity, saying it's easy to navigate and use. 2. Many reviewers find the app's workout tracking features accurate and motivating. 3. Several users appreciate the app's ability to customize workouts to their fitness level. **Cons:** 1. Some users report issues with the app's login system and difficulties signing in. 2. A few reviewers find the app's workout content repetitive and lacking variety. 3. Several users express frustration with the app's customer support, citing unresponsive or unhelpful reps.