A few Spotify settings can override Attunify's own picks:

• Shuffle: Attunify turns this off when it takes over, but worth a glance if something looks off.
• Smart Shuffle: a separate toggle that can slip in its own picks. Tap the shuffle icon until it's fully off (it cycles Off → Shuffle → Smart Shuffle).
• Automix / Crossfade: Settings → Playback.
• Mix: the toggle inside Spotify's queue view.

• Skip (two arrows): moves on and counts as a skip, so the song drifts down your chart.
• Extra skip (three arrows): for songs you really don't want. It counts strongly, and it also tells Attunify to change genre.
• Secret skip (the faint one): moves on without counting at all. Handy when a song's fine, just not right now.
• The star: favourites the song. It jumps up your chart and comes round more often.
• Arrows on the right of Top Listened: how each song has moved since it last settled. A dash means no change; new means it hasn't settled yet.
• Tapping the artwork: jumps to that song in your chart. The share button in its corner sends the song to a friend.
• "Worldwide" on the position graph: overlays the average position across all Attunify listeners, so you can see if a song's popular with everyone or mainly you.

• It follows what you're into. Play a song all the way through (or pick one yourself) and the next songs stay in that genre.
• Skips move it away gradually. Each skip lets in songs a little further from that genre. Three quick skips in a row, or one Extra skip, changes genre.
• Nothing repeats in a session. Once you've heard every song in a genre, it's done: Attunify moves on to the nearest genre rather than playing them again.
• Higher in your chart means more often, and the star is the quickest way up.
• New likes get a head start. A song you've just liked starts near the bottom of the chart, but for its first two weeks it comes round as often as a song three-quarters of the way up, whenever its genre is playing. Just added one from Search and can't see it? Switch tabs and back.

• Discover finds new music from artists like the ones in your chart, in roughly the same genre mix as your chart, plus a few from songs you've just liked and your friends' favourites.
• Radio mixes blend songs you already like with new ones. They're rebuilt once a day, so a mix can look the same if you check again sooner. Dimmed genre cards are genres you haven't got songs in yet: built from popular artists, there to explore.
• Why songs change while you listen: finding new music means asking Spotify about lots of songs, a little at a time, so rather than make you wait Attunify starts you straight away and fills in as it goes. Whatever's playing and the next couple of songs are never swapped out.

Attunify works out the genre of every song in your library in the background. On a big library that takes a while after you first sign up, so picks can be a bit broad until it's caught up. Very occasionally the outside music-data services have nothing on an obscure or older song, so a wrong-genre track can slip into a Radio mix (only ever a new one, never your own). If you spot one, let us know via Feedback.

• Radio: the − on a genre card fades it and moves it to the end of the row; the button on an artist card takes that artist out of Radio.
• Discover: × removes one song for good; − stops suggesting that artist.

Everything you've excluded is listed in Archive, where you can bring it back.

A fresh mix every Friday of new releases from the artists you actually listen to, minus anything you've already liked. If your artists haven't released much that week, it's topped up with wildcards: new releases from artists similar to your favourites (marked with a little joker card). It sits at the front of Radio (you'll get a pop-up when yours is ready), plays through once and then Top Listened carries on. It never uses your free listening hours.

Your friends' favourites turn up in your Discover, marked "From [name]'s favourites", but only in genres you actually listen to. In Recap you can compare tastes and get suggestions from what they've been playing.

If a friend's score or suggestions look empty, they haven't played much in the period you've picked: switch from week to month.

E means a song's explicit. In Top Listened, an explicit song that also has a clean version gets an F in Attunify's gradient: with Family mode on, that one plays the clean version instead. An E with no F has no clean version, so Family mode greys it out and skips it.

Radio and Discover are always finding new songs, so there an explicit one is simply left out and another pick takes its place.

All in the cog, top right: album art and the position graph on or off, Family mode, which device Attunify plays on, how much free Radio and Discover time you've got left this week, Feedback (type it in and hit Send), this FAQ, the tour and Log out. Manage subscription is in there too: change your card, see receipts or cancel (you keep Premium until the end of what you've paid for). On the free plan, Upgrade is in your profile. The two icons next to the cog are your Recap and the mini player.

Tap your avatar, then Frames. Tap any frame to see how to get it: some are earned by listening or inviting friends, colour frames come with Premium, and the EQ Rings are 99p each and yours for good.

Pick the device in the cog under Playing on. Attunify remembers it and picks it again next time it's around. If that speaker disappears or stops answering, Attunify switches to this browser and offers to try the speaker again.

Google and Nest speakers sometimes keep hold of your Spotify after you've moved on, leaving Attunify silent. If that happens, use Grab it back here, or say "Hey Google, stop" (or restart the speaker) and press play.

They come from a notification, which needs the permission Android asks for the first time you open the app. If that got declined, turn it on in Settings → Apps → Attunify → Notifications and reopen the app. Playback inside the app works either way.