I need a way to spoof the GPS on my phone without alerting the clock-in software that I'm using a third party app to do it. I have android
I suspect that the clock-in software is checking for developer options > mock gps > select app. I've tried a couple different gps spoofing apps with the same result "it appears you are using a third party GPS app. Please disable it before clocking out"
Depends on how deep you want to go. Mitmproxy takes care of most of these steps for you. You simply have to install the CA yourself.
https://docs.mitmproxy.org/stable/concepts-certificates