I find that over the 4 years I have been using IFLY that every so often I find an amazing feature. Since there is not a comprehensive manual this is how these are discovered.
Of course, after I post this discovery I know there will be some who will say.."You didn't know that?"
The feature is that if you have on ADSB logging tirned on you can play back your entire flight showing everything you saw on the trip including the targets that came very close to you.
I did find that the playback feature was sometimes itermittent on my tablet.
John M