TwitDiff provides e-mail and RSS notification for accounts unsubscribing from your tweets. It is designed to work reliably with almost any size of follower list, and without exhausting API quota. A notification that describes all unfollows is produced every 12 hours to 30 days, whatever you choose.
Initial release. If your follower count drops and you aren't notified, tell me. This only means that TwitDiff is in testing, and might miss a notification — it will never delete your followers!
Built by @davidbelfast
Design by @haneol
Reliability by Google
AppEngine
TwitDiff accesses Twitter through your account to ensure reliability and fairness, since access to a limited resource is charged to individual accounts. There are three approaches to Twitter access:
You can revoke TwitDiff's access at any time. TwitDiff doesn't know your password, or possess control of your account.