UPDATE 5/13/16: The app still freezes and doesnt sync for like thirty minutes every time I open it. -------------------------- At first, everything went well. The app ran fast and saved and synced almost immediately. Now, when I open the app, it is laggy, takes forever to finally sync, and makes days of data disappear and reappear the next day. The steps, etc. are all counted correctly through the Nabu X but the app itself is slow and clunky, and doesnt always work correctly. Its super slow. Sometimes, I try to add sleep (on days when it didnt register) and I can try and add it over and over and every time I do it, it is blank again once I go back to the sleep page. Overall: Slow app, needs lots of work, great product with a poor app which limits the easiness of the Nabu. Makes me wish there was an alternate app I could use.