I'm designing and building a SleepTracker app. The design's going well, but development will take time since I'm learning as I go and want to add some cool features. The plan is to release it for free because most good sleep trackers cost money.

The app currently tracks sleep data locally on the user’s device, so I don’t need a hosting server. However, if the app becomes popular and users request features like syncing data across multiple devices, that would be a great problem to have.