Kept flicking between distance meters. Locking distance value is arbitrary - 8m one second. Do it again 26m and again multiple values in between. Rubbish
Basic trig. Assumes level ground or else useless
Being able to incorporate the camera zoom function would be handy for long distance...surely there's an algorithm for that. Good app though
Of course it is not 100% accurate, but it does give you a rough idea.
Hardest part is being accurate about the height of the camera lens on your mobile. The software works well, thanks!
Tested . Working. Not precisely 100% but you can have an idea about distance