Logos is giving away the Faithlife Bible app until April 8th. I’m told you can get the NIV (which is rarely free).
I read about it here first - http://www.brigada.org/2013/03/31_11259
Then I went to Logos and found this - https://faithlifebible.com/giveaway
If you do not have the NIV on your phone here is your chance to nab it for FREE