4D Sing-Along 4+

A tool for choirs and singers

Lucas Tsun-Shiu Wong

Designed for iPad

    • Free
    • Offers In-App Purchases



Are you eager to perfect your singing part? From your palm, you can now learn and listen to your parts in any speed & transposition. Make your maestro's dream come true!

Better than your average choir and singing app, this tool lets you:

• Adjust the volume level of each SATB part independently
• Switch between organ, voice, and piano sounds
• Change speed and transposition of the playback instantly
• Listen back to a chord being detected in realtime
• Enjoy a preset library of more than 2500 selections
• Request a piece through the 4D Music on Demand service
• Add custom made works to your favorite playlist
• Bookmark favorite speed and spot
• Stream via FaceTime Share My Screen option in a group call
• Subscribe to plans for unlimited usage

Subscription Details:
• Weekly Plan for 7 days, Monthly Plan for 1 month, or Yearly Plan for 1 year: to gain uninterrupted usage of the app
• Payment will be charged to iTunes Account at confirmation of purchase
• Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
• Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable

For subscription plan and billing questions, contact Apple Support.

For other inquiries, such as repertoire request, email webcompanist@gmail.com.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy: https://4dpianoapp.com/policy

What’s New

Version 1.0.3

Improvement and Fixes:
- New onboarding overlay

App Privacy

The developer, Lucas Tsun-Shiu Wong, 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 Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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