Use APKPure App
Get Unfollow Users for Twitter old version APK for Android
Unfollow the users who not follow you back.
With this app, you can easily unfollow people who are not following you.
Login using your twitter account and password.
In the unfollow page, you will see a list of people who are not following you.
You can unfollow one by one, you can also unfollow 10 people at a time.
It is very easy and quick. And it is free for you to use!