The SS app is simple, just hit 'start workout' and all your warmup sets are worked out based on the work set, and the work set is just 2.5kg more than it was last workout (or 5kg, or whatever you set it to). Enter your reps and if you hit em all, next workout it tacks another 2.5kg or whatever on. No thinking.
I trained with pen and paper for years (and using notes in my phone), but with the SS app I can zone out and not think about what I'm doing, which I like.
So the question isn't "How should I record my workouts," the question is "Is there an app that works similar to SS but isn't restricted to the SS program?"