Differences between iPhones

If your iPhone is 5s or later, it can measure some categories, and it will be shown up automatically in FitPort.

iPhone 6 and above
Walking + Running Distance
Flights Climbed
iPhone 5s
Walking + Running Distance
iPhone 4S / iPhone 5 / iPhone5c
These devices cannot measure anything automatically by itself.

You can use other apps to measure and send data to Health app, or you can input your data in FitPort manually.
Once you have your data in Health app, it will be shown up in FitPort automatically.