Pomodoro Flow is free: anyone can download it and use it with or without an account. Pro is not for sale right now — it is invite-only.
To request an invite, write to sontayhalileren@gmail.com from the e-mail address you will sign up with.
When you create an account with the invited address, Pro unlocks automatically. If you already have an account, tap Account → “Refresh my Pro status” in the app.
Pro is tied to your account and works on every Windows, macOS, Pardus, Android and iPhone device you sign in to. The App takes no payments.