[SoftTalker]

I also wanted to say that for people starting out keep it super simple. I wouldn't even use an app. At most a notebook or spreadsheet. Do "Starting Strength" (squats, bench, deadlift. 3 sets of 5). Start with a weight you can handle with good form, even if it's just the empty bar. When you can do that add 5 pounds at the next workout. Increasing the load is important but don't let your form break down. An app is not going to help you with form, and proper form is critical to avoiding injury, especially if you are at all older.

[jcynix]

I'll second that, no app needed. A small notebook with a "table" per planned exercise and a ball pen are always in my sports bag, so its ready to go when its training time.

The phone appears to be a distraction for many people I watch at the gym, over-extending the rest between sets while watching social media. The minimalism provided by the paper notebook is what I prefer instead.

[padjo]

Honestly for beginners just building a habit of regular lifting is by far the most important thing. Progressive overload, going to failure, periodization etc won’t do much if you don’t have consistency. My advice to beginners would be to go to the gym 3 times a week and do whatever interests you for about 45 minutes. Once you have that habit nailed down for 6 months then we can talk about more advanced stuff.

[RankingMember]

Couldn't agree more about form and keeping it simple. I would note, though, that an app can help with that, e.g. the one I mentioned has videos demonstrating proper form, and what I would do when starting out is video myself from the side and compare. An app will also track progression more easily on something you naturally carry around (your phone), versus needing to remember a notebook.