Need help with FollowNinja? You will find everything you need here.

When you initiate an exchange, we find suitable followers for your account and start following you on their behalf. this way you will earn followers. once other users initiate and exchange, you will follow them back.

If we've followed someone that you don't like, simply unfollow that account via Twitter. But remember, once you unfollow someone, the system will make them unfollow you too and the following exchange between two accounts will never happen again.
Once you initiate an exchange, you will be added to the exchange queue, our app works based on queues, this is to avoid overloading our servers and hitting Twitter API limitations. You will start receiving followers gradually. You can always track your exchange status in your account.
The sky is the limit! The more users are using the system, the more followers you can get. To ensure the best experience for you, there is a 12-hour minimum time difference for requesting new Followers. This means every 12 hours you can request new Followers.