Based on the user reviews of the Crowded Race app, here are three cons and pros in English, with each item limited to 15 words: Cons: 1. "Notifications are too spammy, bombarding users with repeated alerts and taking up too much space." 2. "Some features are buggy, causing errors and making the app frustrating to use at times." 3. "Limited customization options for personalized experience and layout can be improved." Pros: 1. "User-friendly interface makes it easy to navigate and track progress, even for beginners." 2. "Real-time updates and leaderboards keep users engaged and motivated to achieve goals." 3. "Social sharing options allow users to connect with friends and family, promoting accountability and fun." Please note that these are general conclusions based on available user reviews, and individual experiences may vary.