TuskyTusky is finally back in the main F-Droid repository! https://f-droid.org/repository/browse/?fdid=com.keylesspalace.tusky
You can just as well search for "Tusky" in the F-Droid app to find it.
Note: this version uses a separate notification system from the version on google play and amazon. It checks for notifications on a set interval, which unfortunately is not so immediate and can diminish battery life.
The reason it was taken off F-Droid in the first place was because of the closed-source tech that was used for push notifications. So this is also why there's this difference in the replacement system.
Other than that, the versions are identical.
Cryptie