Based on the users' reviews, here are three cons and pros in English, with 15 words limited for each item: **Cons:** 1. Some users find the app's ads intrusive and distracting, disrupting their experience. 2. A few users complain about glitches and errors, causing the app to freeze or crash. 3. One user notes that the app can be too simplistic, lacking advanced features or customization. **Pros:** 1. Most users praise the app's accuracy and ease of use, making it perfect for beginners. 2. Many users appreciate the app's clean design and minimalistic interface, easy to navigate. 3. Several users commend the app's timer and interval features, helping them maintain a consistent pace. Please note that these are summarized from the users' reviews and are not exhaustive.