Based on the users' reviews of the Contra-Swap app, here are three cons and pros in English, limited to 15 words each: **Cons:** 1. "Glitches and errors occur frequently, making the app frustrating to use." 2. "Some users experience difficulties with account registration and login process." 3. "Withdrawal process can be slow and unpredictable, causing inconvenience." **Pros:** 1. "User-friendly interface makes it easy to navigate and use the app." 2. "Wide range of cryptocurrency options available for trading and swapping." 3. "Real-time market data and charts provide valuable insights for traders." Please note that these conclusions are based on a snapshot of user reviews at a particular time and may not reflect the full range of opinions or the app's current performance.