Parasitter allows you to follow your favourite twitters without Twitter even knowing it. Rssitter uses [Nitter's](nitter.net) rss feed in order to gather the latest tweets from your favourite accounts and builds a *twitter-like* feed so you can read them. We will never connect you to Twitter so your privacy is safe when using Parasitter.
Only the hash of your password is stored on the database. Also no personal information of any kind is kept on the app itself, so if a hackers gets access to it only thing they could do would be to follow/unfollow some accounts.
I always recommend self-hosting, as you will be the only person with access to the data.