You can access the Twitch Follower Checker here!

Twitch Authentication

Upon your first visit, click the Authenticate with Twitch button to perform Twitch authentication.
The list displayed will be based on the authenticated user.

Follower List

A list of users currently following your channel is displayed.

New followed List

A list of users who have started following your channel since the Last checked date is displayed.

Unfollowed List

A list of users who have unfollowed your channel since the Last checked date is displayed.

Differential Update

By pressing the CHECK DONE button, the date of Last checked will be updated. This affects the New followed List and Unfollowed List.

Refreshing the Lists

Press the REFRESH LISTS button to retrieve the followers again and update the lists.
Use this feature during a live stream or whenever you want to check the follower transitions in real time.
Due to API limitations, there will be a few minutes delay before you can press the button again.

User Filtering

You can perform user filtering and searching from the search box labeled Search....
All columns text such as the date when the user followed the channel and the display name are searchable.