Stackapella and Sing Harmonies
As of November 2026
Sing Harmonies lets you solo, soften or silence each of four singers in its arrangements, on iPhone and iPad. Its maker has said the app is being phased out. Stackapella runs in your browser, listens as you sing, and lets you record every part yourself.
Who each is for
Sing Harmonies is for
- Learning its four-part arrangements of pop, rock, country and traditional songs by ear.
- Hearing four singers, each at full, soft or silent.
- Paying once for the app and each song.
Stackapella is for
- Feedback on your pitch as you sing your part.
- Recording every part yourself and hearing them together.
- Public-domain songs in four parts, and your own songs.
Side by side
| Sing Harmonies | Stackapella | |
|---|---|---|
| Where it runs | iPhone and iPad. No longer on Google Play12 | In any modern browser, on phones and computers. It installs like an app; there's no app-store app yet |
| Price | $1.99 with three songs; more songs $0.99 each (US App Store)1 | Free to learn. Plus is $4.99 a month or $39.99 a year |
| Learn a part by ear, with live pitch feedback | By ear: solo or mute any of the four singers. Live pitch feedback: not stated1 | Yes: hear each part from a guide voice, then sing it while your notes light up as you hit them |
| Record your own parts, stacked in time | Not stated | Yes: record each part over the ones before, lined up in time |
| Harmony parts suggested for your own tune | Not stated: its songs come from its own catalogue1 | Yes: sing or hum a tune, and alto, tenor and bass are suggested to fit it |
| A course from first note to harmony | Not stated | Yes: free courses, from your first note to four-part harmony, and on skills and styles |
| Choir tools | Not stated | Choir groups and practice tracks |
| Bring in sheet music (MusicXML or MIDI) | Not stated | Not yet: sing or hum a tune, write it in the note editor, or open a Stackapella file |
| Languages | English1 | English |
| Open source | Not stated | Yes, under the Attribution Assurance License |
"Not stated" means we couldn't find it in the product's own listing or website, not that it's missing.
Where each fits better
Where Sing Harmonies fits better
- You already own its songs and know the app.
- You want to hear four singers in its arrangements, one at a time or together.
Where Stackapella fits better
- You want feedback on your pitch as you sing.
- You want to record every part yourself.
- You want new songs, including your own.
Moving over
Coming from Sing Harmonies? Its maker's own notes say no new songs would be added after August 2024, the Android app was removed in November 2024, and in January 2026 the app still worked on the newest iOS. Stackapella's library has public-domain songs in four parts, and you can sing or write your own.
Questions
Can I bring my Sing Harmonies songs over?
No, Stackapella can't open Sing Harmonies songs. Its library has public-domain songs arranged in four parts, like Amazing Grace, and you can make your own.
Does Stackapella work on Android?
Yes, in the browser on Android phones, and it installs like an app.
Is Stackapella free?
Yes: every course and every song in the library, with a free account, and unlimited workouts, your history, singing with friends and choir groups. Plus, for $4.99 a month or $39.99 a year, adds more storage, MP3 and stems, and unlimited private arrangements.
Try Stackapella
Start with your comfortable note. No account needed, and every course is free.
Sources
Seen 2 November 2026, on each product's own listing or website.
- Sing Harmonies on the App Store
- singharmonies.com, with its maker's notes
- Sing Harmonies song info, from its maker
Product names belong to their owners. Stackapella isn't connected with any of these products or their makers.