Based on the reviews of the American Runner app, here are three cons and pros in 15 words or less each: **Cons:** 1. Some users find the app's pace calculator unreliable, leading to frustration. 2. Limited customization options for workout routes and playlists cause disappointment. 3. Technical issues with GPS tracking and audio playback are a common complaint. **Pros:** 1. The app's social features and community engagement provide a sense of accountability. 2. Users praise the app's vast library of workout playlists and music options. 3. The app's GPS tracking and real-time statistics provide accurate and motivating results. Please note that these conclusions are based on a general analysis of the reviews and may not reflect your personal experience with the app.