What's the best Android app for creating custom watch faces and accurately tracking sleep patterns using a smartwatch or fitness tracker?

FitCloudPro is a suitable Android application for designing custom watch faces and accurately tracking sleep patterns. It allows users to personalize their smartwatch or fitness tracker with unique watch faces, offering options for layout and text customization. The app's sleep tracking feature is reported to be quite accurate, providing helpful insights into sleep patterns. While the sleep data passed to Google Fit may differ slightly from what's shown in the app, the core sleep tracking functionality within FitCloudPro remains reliable. To create a custom watch face, navigate to the 'Device' section in the app, select 'Watch Face,' and follow the on-screen instructions to upload images and customize the layout. The app also tracks steps, although some users find the step count to be slightly optimistic. Overall, FitCloudPro provides a balance of personalization and fitness tracking capabilities.