Laying out the streets…STEP 1 OF 3

Stackapella · Office #61,492

Learn harmony in your browser, free and open source

In the Audio, voice and music neighborhood (Visual and media). In town since 3 Nov 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

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What Tablif read on Stackapella's site

Stackapella describes itself as: “Stackapella Learn harmony in your browser, free and open source”

What it is

Calls itself “app”.

  • Calls itself: app
“…mudeo (2019). An open-source app for iPhone and Android for recording yourself on video and stacking the parts into a harmony, alone or with friends.”

Where it puts itself

Rules out “third-party analytics”.

  • Says it will not: third-party analytics
“No app can replace a real vocal coach.”
“There's no third-party analytics and nothing tracks you”

What it costs

Monthly subscription and yearly plan. A free tier, free forever. Trial: “7 days”. Prices quoted: $3.33 a month, $39.99 once a year, $4.99 a month.

  • Monthly: yes
  • Yearly: yes
  • Free plan: free forever
  • Price: $3.33 a month · $39.99 once a year · $4.99 a month
  • Trial: 7 days
“$3.33 a month”
“Billed $39.99 once a year.”
“$4.99 a month”

Who it sells to

Sells to consumers. Built for solo users. Made for Choir singers, Directors and teachers and Songwriters.

  • Sells to: consumers
  • Company size: solo / indie
  • Made for: Choir singers · Directors and teachers · Songwriters
“Stackapella is for anyone who wants to sing harmony and isn't sure which notes to sing.”
“Solo”

How it runs

A web app for iOS. Hosted in the cloud. Open source.

  • Kind: web
  • Runs on: iOS
  • Runs where: cloud / hosted
  • Open source: yes
“Runs in your browser: no app to install, no account to start.”
“Yes, in Safari 16.4 or newer. Add it to your home screen (Share, then Add to Home Screen), so Safari keeps your songs safe.”

What it works with

Names Bluesky, Safari and 1 more on its pages.

  • Names: Bluesky · Safari · X
“X and Bluesky”
“Safari 16.4 or newer”

What it offers as proof

Live, no waitlist. Try it without signing up. Publishes docs.

  • Instant signup: yes
  • Trial asks for: nothing
“Start singing”
“No account to start.”

Sources

Tablif read these pages, last on 3 Nov 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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