Accompanist is a real-time music slow downer and speed changer. Take any song you own and pull the tempo down to learn it — or push it up to performance speed — with the pitch locked to the original key. Built for dancers and teachers, and for any musician learning a song by ear. All in real time, all on your device.
CHANGE SPEED ANY WAY YOU LIKE
• Speed and volume bars always on screen — drag either as the music plays.
• A clear 1× marker to snap back to the original.
• Plus / minus buttons that nudge by 0.01×.
• A type-in field for an exact speed.
• Quick presets across your range.
• Set your own range and centre — from a gentle 0.9–1.1× to a wide 0.25–3×.
KEEP THE PITCH — OR LET IT MOVE
One toggle decides how the music responds:
• ON — tempo changes, pitch stays in the original key. Perfect for drilling choreography slowly, or learning a riff note for note.
• OFF — the classic record-speed effect.
Set the speed back to exactly 1× and the song returns to its original sound.
SEE THE WHOLE SONG AT A GLANCE
A tempo chart maps every speed and volume change across the song, above a waveform of the music — with your loop and markers on it. Drag it to scrub and read values anywhere.
LOOP & DRILL A TRICKY SECTION
• Mark A and B and the music loops that section on repeat — drill a hard 8-count, or a fast solo, as slow as you like.
• The loop region shows right on the progress bar, and clears with one tap.
• Speed Trainer — each time the loop comes round the tempo nudges up, so you build to full speed automatically.
KEEP THE BEAT
• Tap along to set the BPM, then get a "5, 6, 7, 8" count-in before the music starts.
• Turn on the metronome to click along at your tempo while you teach.
• Drop section markers (Intro, Chorus, the lift) and jump straight to any part of a song.
A PROFILE FOR EVERY DANCER (PRO)
• Record your speed and volume changes as a song plays and save them under a dancer's name.
• Press play and the app drives speed and volume for you — hands-free — so you can watch the floor.
• Edit the whole routine point by point in the profile editor.
• Share a profile with another dancer; it reattaches to the same song on their device.
• Profiles back up to iCloud and restore on your other devices.
VOLUME, FADES, AND BOOST
• Per-song volume, independent of your phone's volume.
• Boost above 100% to lift a quiet recording; set your own volume range.
• Smooth fade-in and fade-out.
EXPORT YOUR ADJUSTED SONG (PRO)
Save the music at your chosen speed — following your profile's changing speed and volume — as an audio file. Pick the format, see the size, then play it anywhere.
ORGANIZE INTO FOLDERS
• Add a whole folder and keep its subfolder structure — perfect for a class (Warm Up / Barre / Centre).
• Make your own folders, open them, and play straight through a folder.
• With Accompanist Pro, sync folders across iPhone and iPad over iCloud.
• Share a whole folder — songs and profiles included — with another teacher (Pro) via a link.
• Import from Files, or from Google Drive / Dropbox via Share ▸ Accompanist.
• Pull the audio out of a video (Pro).
• Keep playing in the background and over AirPlay.
MAKE IT YOURS
Six colour themes, from Midnight to Sunset.
ON YOUR APPLE WATCH
Control play/pause, speed, volume and skip from your wrist — run the class without reaching for your phone.
PRIVATE BY DESIGN
No accounts. No tracking. Your music stays on your device.
The free version shows a small banner on the playlist and settings screens; Pro removes it.
— SUBSCRIPTION —
Accompanist Pro is an auto-renewable subscription: monthly (US$2.99) or yearly (US$19.99). Payment is charged to your Apple Account at purchase, and the subscription renews automatically unless you cancel at least 24 hours before the current period ends. Manage or cancel anytime in your Apple Account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://mwsupplylimited.github.io/accompanist/privacy.html
Ratings & Reviews
5.0
out of 5
1 Ratings
Your saved routines are visible the moment a song loads — and pinned screens no longer lose your work.
• A song with a saved routine now says so. The player names the routine and arms it on load, so a song you have set up no longer looks the same as one you have not.
• Record and Profiles stay within reach while a routine is armed, and markers work again on every song.
• The speed and volume graph draws the whole song, including before your first change — what you see is what plays.
• Markers, Profiles, Export and the routine editor stay pinned to the song you opened them on. The song no longer changes underneath them, and an unsaved edit is no longer dropped without asking.
• Exported files match what you hear: your speed and volume limits apply to the export exactly as they do to playback, and multichannel songs export without failing.
• Clearer messages when an export cannot finish, including when the device is out of space.
• iPad: controls are sized for iPad, the bottom bar spans the full width, and large text scrolls instead of being clipped.
• Recording keeps a take's speed changes in the order you made them.
• iCloud sync no longer brings back profiles you deleted on another device.
Version 1.11.8
The developer, Matthew Wong, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Matthew Wong
Size
28.7 MB
Category
Music
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
Apple Vision Requires visionOS 1.0 or later.
Apple Watch Requires watchOS 10.0 or later.
Languages
English and 10 more
English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese