Not working well on iPhone 5s

While it does work from time to time, it failed to update Apples Healthkit several times a day. In order to make it work again, I had to reboot the iPhone. According to the developer, I need to open an issue with iPhone. However, it should at least provide a free version and let user to try it for a week before purchasing it. One star!

Barry132435 about Sync Solver - Fitbit to Health, v2.2