Hi there, everyone!
I recognize this post isn’t specific to mimoLive, but I thought this information would be valuable since I guess many fellow users have been incorporating NDI more often into their workflows (I certainly am!).
I just found out that both iOS apps from NDI (HX Camera and HX Capture) are available for free in the App Store until June 2nd, 2020 (the pair usually sells for $30).
You will find direct links to download them on https://www.ndi.tv.
I have just tested them with mimoLive 5.7b1, and I’m quite impressed!