Turn any MP3 into a playable piano-tiles chart.
Your song is analyzed on this device and is never uploaded.
Raise it if your hits are judged late (e.g. Bluetooth headphones), or let the sync test set it.
Keyboard: hold Space and press the lane key under a sky note, or hold them along an arc. Mouse + keys: your left hand plays the floor, the mouse clicks sky notes and follows arcs.
If you often see LATE when you tap right on the line, raise this. The results screen suggests a value after each song.
Records, coins and unlocks are saved on this device only. Save a backup file to keep them safe or move them to another device.
A picture background with matching colours for menus, buttons and notes.
Colors of the tap tiles in both modes.
Gameplay background colours, used with the Classic Neon app theme.
Cloud library (recommended): set it up once from the Cloud library card on the Play tab. After that, every song you add on your computer is uploaded to your private song repository, and your phone lists it too. Tap a cloud song to download it; it then plays offline.
Open Heather Music Hub from your Home Screen and tap Add songs, or Import song pack to add every song from your computer's Songs folder at once. Pick MP3 or M4A files from the Files app (iCloud Drive, OneDrive, Google Drive or files saved from email). Tap Select to add several at once.
Songs stay inside the app under My Songs and play offline. To remove one, tap × and then Remove.
Click Add songs or drop audio files on it. Added songs are saved under My Songs.
To bundle a whole folder, put the files in Songs/ and run py tools/build_library.py.
Tap a song, wait a few seconds for the analysis, then choose one of four charts. The Lv number shows how hard a chart is.
Vertical plays in portrait with tiles falling down four lanes. Horizontal plays in landscape on a 3D track with arcs.
For Horizontal, turn the phone sideways: the game waits for landscape and pauses if you turn it back.
Vertical: hold the phone upright and use both thumbs on the four lanes. Tap anywhere in a lane; the pads below the line show where.
Horizontal: the lower part of the screen is the floor (four lanes), the upper part is the sky. A common grip is left thumb on arcs, right thumb on the floor, swapping when an arc starts on the right.
Pause with the button in the top-left corner.
Pick your controls on the chart screen under Computer controls:
Keyboard (both hands on the keys): D F J K play the four lanes. In Horizontal mode, hold Space and press the lane key under a sky note, or keep Space and the key under an arc held while it passes. Keys on the other side still play the floor. Esc pauses.
Mouse + keys (left hand on keys, right hand on the mouse): S D F G play the lanes. The mouse is only for the sky: click sky notes, hold the button to follow arcs. Space or Esc pauses.
A touchscreen laptop works like a phone.
Perfect ±150 ms, Great ±190 ms, Good ±240 ms, otherwise Miss. You don't have to wait for the line: once a tile is inside the glowing hit zone (the lower part of its path, about 40% of the way), tapping its lane counts as a Good. Tapping before a tile reaches the zone does nothing. You can slide a finger from one lane into the next to hit it without lifting. Holds score on the press and on the release, and arcs score every half beat you stay on them.
The clear gauge at the top fills as you hit notes and drops on misses. End the song at 70% or more to clear it; below that the result is Track Lost.
Score goes up to 1,000,000. Grades: AP all perfect, SS 980k, S 950k, A 900k, B 800k, C 700k. No misses at all is a Full Combo.
Every play gives EXP toward your player level. Clears also give coins: more for higher grades and harder charts, plus bonuses for a first clear, first Full Combo, first All Perfect, a new best and each level up.
Your rating is the average of your 10 best chart ratings. A chart's rating is its level at 950,000, up to level + 2 at a perfect 1,000,000, so playing harder charts well raises it fastest.
Spend coins in Rewards on tile skins and stage themes. Achievements pay coins too, and two of them unlock the Gold skin and Nebula theme.
App themes at the top of Rewards are free: each one is a picture background with menus, buttons, text, gameplay and note colours that match it. With the default skin, notes use the theme's colours; any other skin you equip keeps its own. If a picture is missing, tap Add pictures and choose the files from your Background folder; with the cloud library connected, your other devices then get them too. The song pack also carries them.
If your hits feel consistently early or late (common with Bluetooth headphones), use the suggested audio offset on the results screen, or set it on the chart screen.
No sound on iPhone? Check the silent switch. Close other apps if the game stutters.
Wired headphones or speakers give the tightest timing.