This app was mentioned in 4 comments, with an average of 1.00 upvote
I assume you want to get rid of that big-brother-bullshit. Option 1) Fly GPS - it simulates your location https://play.google.com/store/apps/details?id=com.fly.gps
Option 2) Prevent Transmission Pull out SIM/activate plane mode/just disconnect from grid through setting
Option 3)Leave phone at home/let it's battery die
https://play.google.com/store/apps/details?id=com.fly.gps
this is the one i use, i'm having no issues what so ever, used it today for about 3 hours to spoof around and catch poliwags
it helped me get a 100% Oddish