Skip to content
KO
All services

A player for practising section by section

Madi

Slow down the tricky move. Practise it on repeat.

Mark the part you want to practise with A and B in your own video. Slow it down and repeat that move as you follow along.

Try the practice song

Basic practice is free · No account, just your files · 33 languages

A person practising a dance move with both arms raised in a studio. An AI-generated sample scene

The move you want to master, one section at a time.

Full-screen music practice. At the top are Listen, the song title, 0:12.0 / 1:30 and the 30s per row menu. Three rows of thick 30-second bars show the loop from A at 0:12.0 to B at 0:42.0 across two rows as a bold highlighted band, with the played part in light grey and a white line at the current position. Below are the status line A-B Loop 1 · Length 0:30.0, round A (0:12.0), back 10 seconds, play, forward 10 seconds and round B (0:42.0) buttons, and five tools: Forever, 1×, Practice tools, Edit and More
View the iPhone practice screen (new tab)

iPhone app in English · sample file · the photo is an AI-generated sample scene.

  • iPhone · iPadApp Store · worldwide except mainland China
  • AndroidGoogle Play · worldwide

Try it without installing

Just the hard part, until it clicks.

Pick a tricky part of our original practice song and listen at 0.5×. At B, it returns to A so you can hear the same part again. Sound starts only when you press play.

In the app, practise with your own videos and music. A–B loops and speed control are free.

Download this song to try in the app

  • Music

    Those two tricky bars, at a pace your hands can follow.

  • Dance

    A move you want to learn, on repeat in slow motion.

  • Listening

    A line worth hearing again, until you can say it.

MadiWeb demo
Time to practise

Make this part yours.

An original practice song · A–B loop

Choose a part
Find your pace

Press play to hear the song. Change the speed and listen.

Original sample audio · plays only when you press play

How to start

Start with one file.

  1. Open your file

    Pick a video or song saved on your device, or one in a shared folder on your home NAS.

  2. Pick the hard part

    For music, open Practice to see the song as rows of thick bars. Tap the round A and B buttons to set the start and end, or split sections in Edit, to pick the part you want to hear again.

  3. Repeat at your pace

    Choose any speed from 0.25× to 4×, then go back to normal once it feels familiar. You can set a repeat count too.

What it does

Split it, slow it, repeat it.

This describes the iPhone and iPad app. By device, below, lists what differs on Android.

01Sections and loops

Music practice shows the song as rows of thick bars, 30 seconds per row, or 15 or 60 from the view menu. The played part is bright, your A–B loop is a bold highlighted band, and section boundaries are small gaps in the bar. Tap the round A and B buttons at both ends of the playback row to loop right away, then drag A or B, even onto the next row, or fine-tune each edge by 0.1 seconds in Edit. Split songs and videos into sections and loop neighbouring sections together. Music in standard formats such as MP3, M4A, WAV and FLAC, and MP4 and MOV files in your library loop without a gap.

02Speed and pitch

Change the speed from 0.25× to 4× in 0.01 steps while the pitch stays put. While you listen to music, the playback bar is the whole song’s waveform and the row below steps the speed down or up. With Pro, shift the pitch of music files in standard formats (MP3, M4A, WAV, FLAC and so on) in your library in semitones and cents, and use a three-band EQ and vocal reduction.

03Practice modes and beat

With Pro, choose rests between repeats, a count-in and a gradual speed ramp. Pro also finds the beat so you can practise along with a 1–8 count and a metronome locked to the song. The standalone metronome (30–240 BPM, 2–8 beats, tap tempo) is free.

04Video and dance

Opening Practice keeps the video at full size, and a bar on top shows the whole file and your A–B loop so you can drag either end. Zoom in and step through frame by frame to study a move. Pro adds mirrored video and a camera mirror that shows you beside the video, with pinch to zoom.

05Subtitles and dictation

Loop SMI, SRT, VTT and ASS subtitles or LRC lyrics line by line, and check what you heard with dictation practice. For library files in standard formats (MP4, MOV, MP3, M4A and so on) without subtitles, Pro makes them with on-device speech recognition.

06Your files, NAS and PDF scores

Practise with your own files, ad-free. Open videos straight from your home NAS, and turn PDF score pages with a tap on either side or a pedal.

Inside the app

From practice to your library.

Captured from the iPhone app in English. The songs and PDF are sample files made for this tour.

8 screens · scroll sideways

  1. Full-screen music practice. At the top are Listen, the song title, 0:12.0 / 1:30 and the 30s per row menu. Three rows of thick 30-second bars show the loop from A at 0:12.0 to B at 0:42.0 across two rows as a bold highlighted band, with the played part in light grey and a white line at the current position. Below are the status line A-B Loop 1 · Length 0:30.0, round A (0:12.0), back 10 seconds, play, forward 10 seconds and round B (0:42.0) buttons, and five tools: Forever, 1×, Practice tools, Edit and More

    01Sections

    See the rows, then loop between A and B

    Free

    • The song as rows of thick bars, 30 seconds per row, or 15 or 60 from the view menu
    • Round A and B at both ends of the playback row loop right away; split sections in Edit and pick them from the section map
    • Drag A or B, even onto the next row, or fine-tune by 0.1 seconds in Edit › Fine-tune boundaries
  2. The Loop plan. Three repeats, a two-second rest, count-in, and a speed ramp from 0.7× to 1×

    02Loop plan

    How many times, with rests, getting faster

    Count free · other options Pro

    • A repeat count, then stop or keep playing
    • Rests between repeats, echo recording and a count-in
    • A speed ramp, cumulative practice one section at a time, and moving on to the next section
  3. The video beat view. Beat 5 shown large over a dance practice video (an AI-generated sample scene), with frame back, play and frame forward in the middle, and below them the 0:50 / 2:34 bar with Loop, 1×, Mirror and more buttons

    03Beat

    Count the beat for dance and playing

    Pro

    • Tap the beat or detect it, then see a large 1–8 count
    • A metronome click locked to the song, or a spoken count
    • Mirror the video, or show yourself beside it with the front camera (pinch to zoom)

    The video on screen is an AI-generated sample scene.

  4. The sound sheet. Pitch at -2 semitones with +10 cents, vocal reduction on, and bass, mid and treble EQ sliders

    04Sound

    Pitch, EQ and vocal reduction

    Speed free · sound tools Pro

    • 0.25–4× speed in 0.01 steps, with pitch kept as is
    • On music files: pitch in semitones and cents, three-band EQ, vocal reduction (videos keep their original sound)
    • Vocal and accompaniment separation and chord detection, on the device
  5. The subtitle list. Timed English lines with a dictation practice entry at the top and the current line highlighted

    05Subtitles

    Hear each line, then say it back

    Subtitles free · transcription Pro

    • Tap a line to jump there, hold it to loop just that line
    • Two subtitles at once, 0.1s sync, hide and reveal
    • Dictation practice, and on-device transcription for files without subtitles
  6. The NAS screen. Two shares, Living Room NAS and Studio Computer, the second marked Pro

    06NAS

    Play straight from your home NAS

    One share free · more with Pro

    • From Import › NAS or the Tools tab, find and connect to SMB shares on the same Wi-⁠Fi
    • Passwords stay in the device keychain
    • More shares and downloads, with subtitles or whole folders, in Pro
  7. A PDF of a guitar chord chart, with a toolbar for pages, grid, search, bookmarks, contents and markup

    07Documents

    Scores and PDFs in the same app

    Reading free · editing Pro

    • Search, contents, bookmarks and night mode
    • Score mode: turn pages with a tap on either side or a pedal
    • Highlights, handwriting, signatures, page edits, merge and scan in Pro; save as a new file to keep the original
  8. The library. Import and Settings at the top, then one row with All, Music, Video and Documents chips, a sort icon and search, and a slim row with the NAS and Edits folders and New Folder. Ten files from October sit in a grid: a dance video as a large tile, songs as a file colour with a waveform, and PDFs as their first page

    08Library

    Your own files. No ads, no internet

    Free

    • Videos, music and PDFs from every folder in a monthly grid, with your latest practice shown large
    • Type, Sort · Select and search in one row; import from Files (whole folders), Photos and Music (unprotected songs)
    • Send files to and from a computer browser on the same Wi-⁠Fi

What it does not do

Better without.

Read the privacy policy
  • Ads
  • In-app accounts or sign-in
  • Behavioural tracking
  • Uploading your files
  • Subscriptions

Free and Pro

Basic practice is free.

Sections, A–B loops and 0.25–4× speed are free.

The cards and the comparison describe the iPhone and iPad app.

Basic

Free

No sign-up or payment in the app

  • Sections · A–B loops · repeat count
  • 0.25–4× speed, pitch kept
  • Every supported format · subtitles and lyrics
  • Dictation practice · practice log
  • Library · Wi-⁠Fi transfer · one NAS
  • PDF reading · score mode
  • Standalone metronome

Pro

One-time purchase

Not a subscription · price in the store and the app

  • Rests · count-in · speed ramp · cumulative practice
  • Beat and 8-count · metronome locked to the song · spoken count
  • Metronome tempo trainer · polyrhythm
  • Pitch, EQ and vocal reduction for music in standard formats · vocal and accompaniment separation
  • Subtitles from on-device speech recognition
  • Mirrored video · camera mirror
  • Several NAS shares · PDF markup · video editing
See the full comparison

Practice

Free

Rows of time bars · waveform · sections · A–B points · seamless section loops (music in standard formats, MP4 and MOV in the library) · line loops · repeat count · edge trimming · split by subtitle, lyric or chapter · dictation practice · practice log

Pro

Rests · echo recording · count-in · speed ramp · cumulative practice · next-section mode · beat and 8-count · metronome locked to the song and spoken count · split by beat or pause · on-device transcription · sharing section maps

Sound

Free

0.25–4× speed in 0.01 steps, pitch kept

Pro

Recording yourself to compare with the original · pitch in semitones and cents, three-band EQ, vocal reduction and quiet-audio boost (music files in standard formats in the library only; videos and files played by the extended engine keep their original sound) · vocal and accompaniment separation · chords and key · spectrogram · tuner

Metronome

Free

No song needed: 30–240 BPM · 2–8 beats · tap tempo · click volume · keeps going with the screen off

Pro

Spoken count · tempo trainer (step towards a target every few bars) · polyrhythm

Video and dance

Free

Zoom · frame by frame · picture in picture · AirPlay

Pro

Mirror video · camera mirror

Playback

Free

Every supported format · subtitles and lyrics (LRC) · embedded tracks · resume · background play · lock screen controls · sleep timer · folder repeat and shuffle · keyboard and pedal

Pro

All free

Files and NAS

Free

Library · import from Files (whole folders), Photos and Music (unprotected songs) · Wi-⁠Fi transfer · stream from one NAS

Pro

Several NAS shares · downloads with subtitles or whole folders

Documents (PDF)

Free

Reading · search · contents · bookmarks · night mode · score mode · share · print

Pro

Highlights, text and handwriting · signatures · page edits · merge · scan · PDF from photos · password

Editing

Free

Pro only

Pro

Trim · join · slow down · mirror · extract audio · save a practice section with its speed and pitch

Phone cleanup

Free

Find similar photos, screenshots and large videos · delete one by one

Pro

Clean up in one go · select every screenshot · compress videos, keeping date, place and album

Buying Pro
Purchases do not move between the App Store and Google Play.
Price
See the price in your local currency on the App Store, on Google Play or in the app.
On your device
Transcription runs on the device, as do vocal separation and chord detection (iPhone and Android). Your files are never uploaded.

Countries and languages

Worldwide except mainland China, in 33 languages.

Where
The iPhone and iPad app is on the App Store worldwide except mainland China. The Android app is on Google Play worldwide.
Price
Pro is a one-time purchase, not a subscription. The App Store and Google Play show the price in your local currency.
App language
Madi follows your device language and falls back to English. To change it for Madi alone, open iPhone Settings > Madi > Language, or App languages in your phone’s Settings on Android 13 or later.
The same everywhere
No account, and your files are never uploaded. Practice logs and section maps stay on your device.

App languages33

  • 한국어
  • English
  • 日本語
  • 简体中文
  • 繁體中文
  • Español
  • Português
  • Français
  • Deutsch
  • Italiano
  • Nederlands
  • Svenska
  • Dansk
  • Norsk
  • Suomi
  • Polski
  • Čeština
  • Magyar
  • Română
  • Hrvatski
  • Српски
  • Ελληνικά
  • Русский
  • Українська
  • Türkçe
  • Bahasa Indonesia
  • Tiếng Việt
  • ไทย
  • Filipino
  • हिन्दी
  • العربية
  • עברית
  • فارسی

Spot an awkward translation? Let us know and we will fix it in an update. Report a translation

By device

What each device includes.

iPhone and iPadApp Store worldwide except mainland China · iOS 17.4 or later

Everything this page describes. Pro is bought on the App Store; restore it on other devices with the same Apple account.

AndroidGoogle Play worldwide · Android 8.0 or later
  • FreePlayback (formats the built-in engine cannot open play only while the app is on screen) · section practice · subtitles · dictation practice · starred sentences and Saved sentences · one NAS · Wi-⁠Fi transfer · importing videos from Photos · PDF reading (contents, search, score mode) · standalone metronome
  • ProPractice modes · echo recording and recording · beat and a metronome locked to the song · spoken count, tempo trainer and polyrhythm for the metronome · pitch in semitones and cents, EQ, vocal reduction and boost (files opened by the built-in engine) · vocal separation down to drums and bass (the model is installed with the app) · chords with sevenths and inversions, key and spectrogram · tuner · mirrored video · camera mirror · split by pause · transcription (Android 13 or later, on phones with on-device speech recognition) · subtitle translation (Google ML Kit, on this phone) · practice files from saved sentences · sharing section maps and Audacity labels · several NAS shares and downloads · PDF markup and making · paper scanning (Google Play services document scanner) · video and audio editing · saving a section as a file
  • Not includedGuaranteed gapless loops · Music app import · AirPlay · phone cleanup

Pro bought on Google Play is separate from Pro bought on iPhone.

Between devicesNo automatic sync

Practice logs and section maps stay on each device. With the same media file, you can move a section map (.madi) yourself (sending and importing on iPhone and Android is Pro).

Inside the Android app

Listening and practice on Android, too.

Actual Android app views rendered in a test environment. Files and playback states are examples.

Android listening screen with a colored tile and a music note, the song title, a progress bar with elapsed and total time, playback controls, and a bottom row with − 1x + speed and a Practice button

Open music and listen comfortably

Once a song is analyzed, the progress bar becomes a whole-song waveform. Change speed right away with − 1x +, and open Practice when you need it.

Android music practice with 30-second rows of thick bars, a brighter played part, small gaps at section boundaries, A and B markers with a highlighted loop band, a playhead and the range length. Below are one status line reading A-B loop 2/5, round A, back, pause, forward and B buttons with their times, and a tool row: 5 times, 0.8x, Practice tools, Edit, More

See your range across multiple rows

Choose an A–B range on rows of thick bars, with the loop shown as a highlighted band. Below are one status line, round A, Play and B buttons, and five tools.

Good to know

Common questions

What can I practise with?

Start with video and audio files you already have, including MKV and AVI video with SMI or SRT subtitles. Import them from your device or browse a shared folder on your NAS. Playback support depends on the codec inside the file.

Do I need an internet connection or an account?

Playback and basic practice with files saved on your device work offline, without an account. In-app purchase and restore need an internet connection, and a NAS opens only on the same network. Downloads and Pro use your App Store or Google Play account; you never need a Vivory Lab account.

What is free, and what comes with Pro?

Sections, A–B loops, repeat counts, 0.25–4× speed and the standalone metronome are free. On iPhone and iPad, Pro adds advanced practice modes, beat, pitch, recording, vocal separation, PDF markup and file export. On Android, Pro adds practice modes, beat and a metronome locked to the song, sound tools such as pitch and EQ (files the built-in engine opens), vocal separation, mirrored video, split by pause, transcription (Android 13 or later, on phones with on-device speech recognition), subtitle translation, paper scanning and sharing section maps. Pro is a one-time purchase, not a subscription. See the price in your local currency on the App Store, on Google Play or in the app.

Does Pro bought on iPhone work on Android?

No. Purchases do not move between the App Store and Google Play. Pro bought on iPhone or iPad unlocks on devices with the same Apple account, and Pro bought on Android unlocks on Android devices with the same Google account.

Can I get Madi now?

The iPhone and iPad app is on the App Store worldwide except mainland China. Use the App Store badge on this page. The Android app is on Google Play worldwide. Use the Google Play badge. The store lists supported devices and the latest version.

Is Madi available in my language?

The app comes in 33 languages. It follows your device language and falls back to English for any other. You can also choose a language for Madi alone in iPhone Settings > Madi > Language, or under App languages in your phone’s Settings on Android 13 or later.

Supported files

Video
MP4 and MOV (standard formats), plus MKV, AVI, WMV, WebM, TS and more (extended engine)
Audio
MP3, M4A, AAC, WAV, FLAC and AIFF (standard formats), plus OGG, Opus, WMA, DTS and more (extended engine)
Subtitles
SMI, SRT, VTT and ASS, embedded subtitles, LRC lyrics
Documents
PDF
Import
Home NAS (SMB) · Photos · file picker · sharing · Wi-⁠Fi transfer, plus the Music app on iPhone
App language
33 languages · follows your device

Today’s practice

Got a part you want to practise?

Basic practice is free. Start with your own files, no account needed.

Ask about Madi

Go there

Documents

People practising an instrument, singing, dance or a language on their own

  1. App Store launch in Korea
  2. Launch worldwide except mainland China · 33 languages
  3. Google Play launch · worldwide
  4. TodayStart free