If you’re on a budget I would steer clear of any shoe designed for lifting. What you want to do is look for a shoe with a relatively flat sole and is low to the ground. Chuck Taylors usually fit this description.
I currently use Nike Metcons for most of my lifts but will every now and then I rock my Reebok Lifter PR shoes during a squat session since it feels like I get more depth in those.
I haven’t found an open source alternative that’s as good as fitnotes on Android