The idea
One rating, three states, everywhere a song appears.
Setlist apps manage charts and running order but do not know how well you know a song. Practice trackers rate songs but live on one platform and have no setlists, streaming links, or import. Know the Tune links the rating to the set: twelve green, three yellow, one red, gig in nine days.
Every rating shows color, icon, and word, so it reads on a dim stage and without color vision. The app never changes a rating on its own. It asks; you decide.
Specification
What the app does, stated plainly. Where something lands at launch rather than today, the row says so; the platform table below carries the same marks.
- Add songs
- Search a catalog with album art as you type, paste a list one song per line, import a CSV, or bring in a playlist.Catalog data from iTunes and MusicBrainz, art from the Cover Art Archive.
- Per song
- Art, artist, album, year, genre, key, tempo, tuning, a pinned note, a dated practice log, files, play history, and links to every streaming service you use.
- Rating
- One tap from any list, the song page, the player, or a swipe. Every change is dated, so you can see a song get better.
- Practice
- Work on these lines up red songs, then yellow, least recently played first. Pick a tune draws at random, weighted toward what needs work. Still got it? asks about green songs you have not played in 60 days.
- Setlists
- Ordered songs with a per-song key and note, a gig date, and a readiness bar: how many green, yellow, and red, and the days left. Share a set with one link; a bandmate imports it into their own account and rates it themselves.
- Player
- Plays a set straight through. Your own recordings get a tempo control from 50 to 150 percent with the pitch held, and an A/B loop for the hard bar. Apple Music subscribers hear full songs in the app on iPhone, iPad, and the web. YouTube plays in the app; Spotify plays in the page on the web and opens the Spotify app on phones. Open in any service is always one tap away.
- Files
- Charts, lead sheets, recordings, and click tracks attached to the song. PDF, audio, and images. 5 GB on Pro.
- Streaming links
- Apple Music, Spotify, YouTube Music, Tidal, Amazon Music, Deezer, Pandora, SoundCloud, and YouTube, in the order you choose.Links resolved through Songlink where an exact match exists.
- Import
- CSV from anywhere, plus Apple Music, Tidal, and YouTube playlists. A preview shows the matches before anything is added; songs you already have keep their rating.
- Offline
- The list, search, queue, random pick, and rating all run on the device. Changes sync when a signal returns, and the same account works on iOS, Android, and the web.
- Sign in
- Apple, Google, or an emailed code. No password to remember. Delete the account and everything in it from inside the app.
- Accessibility
- WCAG 2.2 AA. No rating is shown by color alone. Targets are 48 points or larger, and the actions that matter sit low on the screen.
By platform
One app, one design, three places to run it. The table marks what differs.
| Capability | iOS | Android | Web |
|---|---|---|---|
| Catalog, rating, practice, setlists | |||
| Offline use and sync | |||
| Player: tempo change on your recordingsPitch held while the speed changes | |||
| Player: pitch shift in semitonesRubber Band Library, native builds first | After launch | After launch | After launch |
| YouTube playback in the app | |||
| Spotify playbackIn the page on the web; phones open the Spotify app | |||
| Apple Music in-app playbackFor Apple Music subscribers; Android after launch | After launch | ||
| Playlist import: Apple Music | After launch | ||
| Playlist import: Tidal | |||
| Playlist import: YouTube | |||
| CSV import and export | |||
| Files: PDF, audio, images | |||
| Sign in with Apple | |||
| Background audio with the screen off | |||
| AirPlay and Bluetooth output picker | After launch | ||
| Sidebar layout with side-by-side panesiPad and desktop browsers |
What it does not do
And why, so nobody finds out after signing up.
- Spotify import or playback
Spotify closed its API to new apps in 2026. Spotify still works as a link on every song, and a Spotify playlist arrives through a CSV export from tools like TuneMyMusic or Soundiiz.
- Tempo or pitch on streamed audio
Every streaming service forbids it. Tempo and loops work on recordings you upload, which is where practice happens anyway.
- Charts and lyrics display
Attach your PDF and open it in one tap. Know the Tune is not a chart editor and does not plan to become one.
- Band-shared repertoire
Today each person keeps their own ratings. Shared band lists, where everyone rates the same songs, are on the list for later.
- A light theme
Dark only at launch. It is built for dim rooms and stages. A light table is a token swap away if people ask.
Data and credits
Where the metadata comes from, and the libraries the app is built on.
- Song metadata
Titles, artists, albums, years, and genres from the MusicBrainz database and the iTunes Search API. Album art from the Cover Art Archive.
- Streaming links
Streaming links powered by Songlink.
- Tempo and key
Tempo and key data by GetSongBPM, with Deezer as a fallback for tempo.
- Time stretching
This product uses the Rubber Band Library audio timestretcher from Breakfast Quay.
- Photographs
From Unsplash, by Abstral Official, Chris Zhang, Konstantin Kitsenuik, Mostafa Meraji, and Music HQ.
Also from Sprung Interactive
Small tools for working musicians, each doing one job.