How do I delete my account?
In Settings, under Sync across devices, tap Delete account. The account deletion page explains the rest.
How do I add a site?
Tap + and paste the site’s address. If the site names its feed (most news sites and blogs do), it is found; otherwise look for an RSS or Atom link on the site and paste that.
How precise can filters be?
A filter has words or phrases that must appear (any of them or all of them) and words that must not; it looks at the title only or the text too, whole words or parts, with or without matching case; it can be limited to one author, to articles not older than some days, and to one folder or chosen feeds. Between slashes a term is a regular expression, for example /\bF1\b/. The preview shows what it catches before you save it.
What is a smart folder?
A filter that collects instead of hiding: every article from the chosen feeds that matches it, in one list under Filters. Hide filters still apply inside it.
Why do I only see a short text?
The app shows what the feed offers: the title and the short text its publisher puts in it. The full article stays on the site; Read on the site opens it there.
Do I need an account?
No. Without one your feeds stay in this browser. Export them as OPML in Settings now and then, or sign in to keep them on all your devices.
Can I bring my feeds from Feedly or another reader?
Yes: export an OPML file there and choose Import OPML here (in Settings, or on the empty start screen). Folders come along. Export OPML takes them the other way.