Howli

Sing every part. Get a harmony video.

Learn harmony parts with pitch guides, layer your voice, or invite a friend to add theirs. Make a harmony video together or on your own.

Download on the App Store Download on Google Play
Howli practice screen with hear it and sing it controls Howli stacked voice video grid with four harmony parts Howli song picker with custom song code entry and built-in song choices
Guided harmony recording

From one voice to a harmony video.

01

Pick a song

Choose a built-in song, paste a code, or write your own.

02

Sing the parts

Hear each part, follow live pitch and lyric cues, and improve your score. Howli keeps your best take for each harmony layer.

03

Save and share

Howli combines your best takes into one harmony video, ready to save or share.

Duets

Sing your part. Let a friend add theirs.

Start a harmony, send your duet file to a friend, and let them add their voice. Turn both voices into one harmony video, even when you’re apart.

How to join a duet

  1. You start

    Record a part, then choose Invite to duet.

  2. Send your duet

    Share the .howli file with a friend.

  3. They add their voice

    They open the file in Howli, record another part, and save or share the harmony video.

Made for your voice

Songs that start where your voice feels good.

Sing a comfortable low note and high note once. Howli uses them to suggest a starting key for guided songs. Adjust it before recording, or start a new version in another key and keep your existing takes.

App Store

Ratings & Reviews

4.5 out of 5 41 Ratings
Combined across App Store countries and regions. Your local App Store may show only ratings from your country or region.

Great App

It does exactly what its supposed to. Easy to use and even no Ads! Love it
lucuza · Germany App Store review

Really enjoying so far

It’s simple and easy to use, and I’m excited to see more songs added soon!
Winklord · United Kingdom App Store review

LOVE LOVE LOVE

Use this app if you love harmonies!!!!
Jonathan Angelo P. Tuplano · Philippines App Store review
Custom songs

Bring your own harmonies into Howli.

Write vocal parts on your iPhone or Android phone, or import MIDI or MusicXML in the free browser editor. Share a Howli song code so another singer can record their own version of your arrangement.

Open the free browser song editor
Howli’s free browser song editor with pitch and lyric blocks for four vocal parts
Free browser editor
Howli’s iPhone song editor displaying pitch and lyric blocks for a custom harmony song
Howli for iPhone
More ways to sing

Record harmonies your way.

Layer your voice with Freestyle

Record two to six vocal layers, choose your tempo and length, and build an a cappella performance. Freestyle needs no written notes and has no pitch score.

Camera on. Or off.

Record your voice with or without camera video. Howli can turn your layers into a shareable video with animated pitch visuals, so you can keep your face off screen.

Make the video yours

Choose part colours, show or hide lyrics and pitch notes, and adjust reverb. Preview your style, then save or share the finished harmony video.

FAQ

Questions before you sing?

What is Howli?

Howli is an app for learning harmony parts and recording layered vocal videos on iPhone and Android. Follow pitch and lyric guides, record two to six layers in Freestyle, or send a duet file so a friend can add their voice. Save or share the finished harmony video.

How does guided harmony recording work?

Listen to one part, sing with pitch and lyric cues, save your best take, and repeat until your harmony video is complete.

How is Howli different from Acapella or BandLab?

Acapella and BandLab give you tools to record and layer your voice. Howli also shows you what to sing: hear each harmony part, follow pitch and lyric cues, and turn your best takes into one harmony video.

Does Howli adapt songs to my vocal range?

Yes. Find your comfortable low and high notes once, and Howli uses your saved range to choose a starting key for songs with pitch guides. You can still adjust the key yourself.

Can I create and share my own harmony arrangements?

Yes. Write notes and lyrics for vocal parts in Howli on iPhone or Android, or in the free browser editor. Share the arrangement as a Howli song code so another singer can import it and record their own version. A song code contains the arrangement, not your audio or video recordings.

How to use a song code

Can I record a duet with a friend remotely?

Yes. Record at least one part, choose Invite to duet, and send the .howli file to a friend. They open it in Howli on iPhone or Android, add their part, and save or share the combined harmony video. You record at different times; each shared file creates a separate saved version. A duet file includes the arrangement and selected recordings, while a song code shares only the arrangement.

Where are recordings stored?

Recordings are processed and stored on your device. You stay in control of recordings and finished videos.

Is Howli free, including saving and sharing?

Free practice includes a daily recording allowance. Your retained performances stay free to review, save and share, even if you reach the allowance or Howli Unlimited ends. Unlimited removes the daily recording limit. Songs written from scratch in Howli have unlimited free practice on the creator’s device. Freestyle has unlimited free practice on iPhone and Android.

Free practice and Howli Unlimited

Can I import sheet music or MIDI to practise harmonies?

Yes. Import a MIDI or MusicXML file into Howli’s free browser editor, check the vocal parts, then copy the resulting song code into the Howli app to practise and record. Sheet music must be in MusicXML format; PDF scores and photos are not supported.

Open the MIDI and MusicXML editor

Is Howli available for iPhone and Android?

Yes. Download Howli for iPhone from the App Store or for Android from Google Play.

Start singing

Make your first harmony video.

Pick a song, record each part, and watch the full harmony come together.

Download on the App Store Download on Google Play
  • No account needed
  • No ads
  • Recordings stay on your device