Terms
What you are buying
A personal licence to use Tabify on any Mac you own, for as long as you like. Updates are included. There is no subscription and nothing expires.
Refunds
If Tabify is not for you, write within 30 days and you will be refunded. No reason needed. It is a $15 utility and an argument would cost us both more than that.
What we do not promise
Tabify moves windows belonging to other applications using the facilities macOS provides for that. Some applications do not cooperate, and Apple may change how those facilities behave. Tabify is provided as is, without warranty.