cycles question

shineonastar

so this app is saying I'm on cycle day 52 as last period was may however on another app it's saying I'm on cycle day 17 as it's been 17 days since i had implant out ... so I'm wondering did I start a new cycle from the moment I had my implant out as on the other app it allows you to put when you started to ttc aka no birth method and its counted from that day a new cycle but glow don't allow you to do that it assumes I've had no birth control method since I was on my last period and another app I've got is saying a new cycle for me starts tomorrow and that I'm on cycle day 52 aswell but that app doesn't allow you to put when came off birth control ... confused help please