Based on the users' reviews of the app, here are three cons and pros in English, each limited to 15 words: **Cons:** 1. Users complain of poor customer support, with many receiving slow or inadequate help. 2. Some users experience frequent crashes and bugs, causing frustration and wasting time. 3. Others feel the app is too limited in its features and lacks depth in its functionality. **Pros:** 1. Many users praise the app's user-friendly interface, making it easy to navigate and use. 2. Reviewers appreciate the app's ability to provide accurate and detailed calculations for complex equations. 3. Some users enjoy the app's aesthetic design, with a visually pleasing interface and a clean layout.