Howli: Learn to Sing Harmonies
Record each part. Stack vocals
Only for iPhone
Free · In‑App Purchases
iPhone
Sing harmonies with yourself. Follow pitch guides or record freely in Freestyle, then save and share your layered vocal video with or without showing your face.
Howli is a harmony singing and vocal recording app for iPhone. Practise each vocal part with pitch and lyric guides, record harmonies with yourself, and turn your voice into a layered harmony video.
Learn and record harmonies
- Hear each part before you sing, then follow pitch and lyric cues while recording.
- Use your vocal range to choose a starting key, then adjust it yourself.
- Record each harmony separately and bring your best takes together in one performance.
Sing with yourself in Freestyle
Record two to six vocal layers, choose your tempo and recording length, and sing freely without written notes or a pitch score. Make an a cappella-style cover or build a one-person choir with your own voice.
Create and share your own arrangements
Choose a built-in song, paste a Howli song code or write notes and lyrics for your own vocal parts. Share the arrangements you write as song codes so another singer can record their own version. Song codes contain the arrangement, not your audio or video recordings.
Import MIDI and MusicXML
Open Howli's free browser editor at https://get-howli.com/custom, import a MIDI or MusicXML file, and check the vocal parts. Copy the resulting song code into the iPhone app to practise and record. PDF scores and photos are not supported.
Save and share, with or without the camera
Record with the camera on or keep your face off screen. Voice-only recordings can still become a shareable video with animated pitch visuals. Choose part colours, show or hide lyrics and pitch notes, and adjust reverb or voice pitch before saving your finished harmony video.
Start free
Free practice includes a daily recording allowance, with full-quality saving and sharing included. Songs you write from scratch in Howli have unlimited free practice on your iPhone.
Howli Unlimited
Keep practising with unlimited recording attempts for every song and part, and sing the extended ending of In the Bleak Mid-Winter. Its first four sections remain free to record, review and share. Choose a monthly or yearly subscription, or lifetime access with one purchase. Your retained recordings remain free to review, save and share if Unlimited ends.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
UX improvements
The developer, CandidGO Ltd, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Contacts
- User Content
- Identifiers
- Usage Data
- Diagnostics
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CandidGO Ltd
- Size
- 91 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
English and 44 more
- English, Arabic, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Malay, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Contains
Messaging and Chat
User-Generated Content
- In-App Purchases
Yes
- Howli Unlimited Monthly $3.99
- Howli Unlimited Lifetime $24.99
- Howli Unlimited Yearly $14.99
- Copyright
- © 2026 CandidGO Ltd