Based on the users' reviews of the Interval Timer Training Timer app, here are three cons and pros in English, limited to 15 words each: **Cons:** 1. Some users found the app's user interface cluttered and confusing, making it difficult to navigate. 2. A few reviewers experienced issues with the timer's accuracy, which affected their workout experience. 3. A few users felt that the app's features were not customizable enough, restricting their training options. **Pros:** 1. Many users praised the app's ease of use and intuitive design, allowing them to quickly set and start their timers. 2. Reviewers appreciated the app's variety of customizable timers and interval options, catering to different workout needs. 3. Users enjoyed the app's clean design and minimal distractions, allowing them to focus on their workout and stay motivated. Please note that these points are based on a review of the app's user reviews on the Apple App Store.