Pirurvik's Tusaalanga iOS and the Inuktut Naqittautit keyboards are free to download from the iTunes app store
Inuktut Naqittautit: https://itunes.apple.com/ca/app/inuktut-naqittautit/id993521673?mt=8
Tusaalanga iOS: https://itunes.apple.com/ca/app/tusaalanga/id491243426?mt=8
Note: the total download of Tusaalanga iOS is approximately 203MB and may take some time to download on low bandwidth connections.