Download
Backlog Zero is free, requires no account, and keeps your data exactly where it belongs — on your machine. Download and you're done.
Backlog Zero isn't notarized through Apple — it's an indie app, not an App Store product — so macOS will throw up a warning the first time you open it. Don't panic. Right-click (or Control-click) the app in your Applications folder, select Open, then click Open again on the dialog. That's it. You won't be asked again.
By downloading, you agree to the End User License Agreement.
What you get
There's no Pro version. No features locked behind a subscription. Everything below is in the download above.
You may also need
Backlog Zero relies on a few free third-party apps and services to connect your platforms and enable certain features. None of them require a paid account. The app will guide you through setup — this is just a heads up on what's involved.