My main issue with apps and even paper notebooks is every time you go to the gym you have to take an action.
If I lay out a schedule for 6 weeks with exactly what I'm going to do with dates, all I have to do is cross it off. And if I don't remember to cross it off, it's fine because I can just go by the day.
I found I was much more likely to stick to a long program when I did that vs logging it the old fashioned way.
Yeah. So with Strong I have all my workouts dialed in with set plans, weights, etc... I like the analytics. I also have some alternate workouts, for instance if I am hurting from Jiu Jitsu I do just a mobility workout. But hey, if you like paper don't let me talk you out of it.