My fiance is tracking my every move

I think I really screwed up.  My fiancé has a lot of trust issues and can be pretty controlling at times. 

We have been trying to work on things and he thought something that could help him would be if we put trackers on our phones.  I hesitantly obliged.  He has become OBSESSED with checking my location.  I am currently sitting at work and he is sitting at home watching the tracker.  He is questioning me as to where my desk is, where the cafeteria is, and is saying “it showed you HERE at one time and HERE another time” because he can see my icon on a birds-eye view on the app.  I’m furious right now.  We just got in a fight because he is accusing me of lying about what I am doing all day at work.  I told him I have been at my desk the whole time other than when I used the restroom.

I really should not have downloaded the app.  I feel very much violated and like I have just made it all so much worse.  I don’t know what to do.  If I tell him I want to delete it, he will think I am hiding something, but I can’t live with him monitoring my every move every day!

What should I do?!