Is there an app I can..

Download or something on my husbands phone to see where he goes at night???.. he been saying he's doing a double shift and works at night too now.. his schedule is in the morning everyday... I know dont come at me please don't hate !! I need proof if hes doing something behind my back. ...(he hardly answers his phone at night time... his paycheck is the same I haven't seen extra money come in.. some days he goes for 2 hours some days 4 some days 8 or more....) confused 😕