GarageBand for macOS Catalina 10.15.7: How to Download it for Free

Borrow a friend’s Mac running a newer OS (Big Sur, Monterey, etc.). Sign into the App Store with Apple ID on their machine. "Buy" (download) GarageBand.

Conclusion

While Apple pushes users toward newer operating systems, macOS Catalina remains a capable platform for music production. By using the App Store’s legacy download feature, you can get the full, free version of GarageBand running on your 10.15.7 system without needing to update your entire OS.

Summary

You do not need to upgrade your macOS to keep making music.

Locate GarageBand in the list and click the Cloud/Download icon.