See who is following back on Instagram

Good morning,
Does anyone know a site or application that you can see who follows me back?
I tried some applications but they don’t give the correct information.
I just need to see that information. So I wanted something simple to access by phone.

you can use Jarvee to check users that you follow and follow you back but JV cannot be installed on a phone but you can install it on a vps then access that vps from the phone if you want .