Unzip anywhere.
Run bandbinder.exe

• Portable mode: the library lives in %APPDATA%\BandBinder. To run fully portable (library stored next to the app), create an empty file named portable.txt next to bandbinder.exe before first launch.
• SmartScreen: if Windows shows "Windows protected your PC", click "More info", then "Run anyway". The app is signed with Azure Trusted Code Signing, but SmartScreen trust can take time to build.
• Missing VCRUNTIME140.dll: install the Microsoft Visual C++ Redistributable once - any up-to-date Windows 11 PC already has it.
• Updating: no installer - unzip the new download above over the old folder. Your library is stored separately and is never touched by an update. The app tells you in-app when a new version is out, so there's no need to check back here manually.

DMG image.
Drag to Applications.

• Requires macOS 10.15 (Catalina) or later. Signed and notarized by Apple, so Gatekeeper lets it open on first launch.
• The library lives in ~/Library/Application Support/BandBinder.

Install BandBinder from Google Play. Google Play Protect scans the signed app.

Install TestFlight on your iPhone or iPad, then use the iOS early access button to join the beta.

• Extract the tar.gz anywhere and run the bandbinder binary inside - no installer, no package manager.
• The library lives under your XDG data home (typically ~/.local/share).
• Requires GTK3 (libgtk-3-0) - present by default on Ubuntu, Mint, and most GTK-based desktops.