I use OnX. I think it’s $30/yr but it shows property lines, topo and landowner information which is handy. It has a tracking tool so you can start a track and it will keep up with everywhere you have covered. Nice when tracking to be able to visually see areas covered on a map. As far as the acreage tool you should be able to make a track and then overlay with the acreage calculator. I use the app often, well worth the money in my opinion.