Pick a song
Choose a built-in song or paste a custom song code when you want to bring your own vocal guide.
Howli
Turn one voice into a harmony video.
Learn each part with pitch cues, record the layers, and watch the full stack come together on your iPhone.
Android coming soon.
Guided harmony recording
From one voice to a finished stack.
Sing your part
Hear the line, follow pitch and lyric cues, and keep the take that feels strongest for each harmony layer.
Finish the stack
Howli combines your best takes into a choir-style video with every harmony layer in place.
Custom songs
Bring your own melody into Howli.
The custom song tool turns a simple MIDI vocal guide into a Howli code that can be pasted into the app.
Make a custom song in Howli
FAQ
Details for singers.
Howli is built for learning vocal parts, recording layers, and keeping recordings under your control.
What is Howli?
Howli is a free guided harmony singing app for singers who want to practice parts, record vocal layers, and turn one voice into a full vocal stack.
How does guided harmony recording work?
You hear one part, sing with pitch and lyric cues, save the best take, and repeat until the full harmony stack comes together.
Can I make custom songs?
Yes. The custom song tool turns a simple MIDI vocal guide into a Howli code that can be pasted into the app.
Where are recordings stored?
Recordings are processed and stored on your device. You stay in control of recordings and finished videos.