Being cheap, I have been using a phone app for dry fire and not using one at all during practice sessions. The apps are not sensitive enough for dry or live fire and have always had to place the phone on a desk or table and dry fire beside it for it to record anything.
Yesterday, I manage to pick up a Competition Electronics Pocket Pro II for $40 brand new in the box at an estate action. But it does not do me any good right now as my house is up for sale and all of my guns and shooting equipment are at my dad’s (70 miles away). Can’t wait to start shooting and practicing again.