It seems that users have issues with some of the apps – for example, S Health does not work at all. As you may have guessed, Gear Fit Manager won't come in handy, too. The latter enables you to manage your Samsung Gear Fit wearable, which will be most probably released alongside with the Galaxy S5 next month.
Take into consideration that the leaked Galaxy S5 apps might not work properly on all Android devices. At the moment, the only devices, which have been confirmed to flawlessly run the leaked apps, are the Samsung Galaxy Note 3 and the Samsung Galaxy S4.
You can head over to XDA and check out the new versions of the apps. The link is at the source.
source: XDA via SamMobile