Some of the best apps I use are one-off payments. Rainlendar Pro which I've been using for years. FreeFileSync which is donationware. I totally agree that when

Some of the best apps I use are one-off payments. Rainlendar Pro which I've been using for years. FreeFileSync which is donationware. I totally agree that when there's a free version and a paid/donation version hardly anyone is actually willing to pay though. The pay-once model is really good for the consumer... until the company goes out of business because they're not making any money. Which is why I also buy products that don't require an ongoing service!