SunnyFit is a free lifestyle app developed by Signal-etech for Android devices. It serves as a companion app for SignalEtech's smartwatch models, including but not limited to TOUS ROND series, Z9 series, and XWatch CC series. The app uses Ble technology to push SMS or call notifications to the watch, as well as the content of the message or call.

With SunnyFit, users can easily set alarms on their phone and push them to the watch for easy access. The app also includes a feature to help users find their watch if it gets misplaced. Additionally, SunnyFit allows users to record their sports track and view it on their phone without the watch.

One of the key features of SunnyFit is its ability to synchronize and analyze fitness and sleep data. Users can use the app to keep track of their fitness progress and analyze their sleep patterns to help them stay healthy and improve their overall well-being.

Overall, SunnyFit is a useful and practical app for those who own a SignalEtech smartwatch. Its seamless integration with the watch and the ability to track fitness and sleep data make it a worthy addition to any user's lifestyle app collection.