This question showed up on anther forum, piqued my interest.
What, if any, smartphone app and features would you find useful, aimed at beginners?
I'm not looking at the business case (though that's another discussion), just the useful features of an app.
I've got one on my phone (Android, "LiftPro") that computes 1RM, Wilkes score, and a few other metrics which I find useful. That's most of what I use it for. It's got some exercise/workout logging features, but I find inputting stuff on a phone is too much of a PITA, prefer paper.
I've got a set of tools/programs on my own computer which estimate BMR and generate a suggested caloric intake and macro breakdown based on activity level (awk/bash/bc scripts for the technically inclined).
It would be kind of cool to have something to generate (and log) 5x5, 5/3/1, or other workout program sessions, though I do this now with a spreadsheet and paper bound logbook. The logbook has the useful feature that I can drop a 500# deadlift bar on it and it works just as well afterward. Not so sure my phone would do as well.
Think basic features, useful stuff, tie-ins, etc., mostly aimed at the beginner.
My main goal would be to have something that doesn't suck (there are a bunch of useless apps out there), is useable, and which actually gives something to the end-user which would be kinda neat.