for sale here: https://itunes.apple.com/us/app/healthentry-easy-data-entry-for-healthkit/id944851718?mt=8
language: Objective-C (Note: I almost wrote this app in Swift but at the time figured it was too new)
description: a simple iOS app that allows users to directly enter data into Apple's HealthKit. Different ViewControllers control views; the HealthEntryItemManager manages the HealthKit interface. SimpleHealthEntryItem and DoubleHealthEntryItem both extend the base class HealthEntryItem.