Flume Pro is a one-off, in-app purchase, made from within Flume for Mac. To purchase Flume Pro, open Preferences > Pro from within Flume for Mac, or purchase it directly from our website.
Mac App Store
Please note that Flume is no longer available on the Mac App Store as of April 6th 2017. You will need to update to Flume 2.6 manually. See our announcement blog post for further details.
While it is still possible to purchase Flume Pro via the Mac App Store, we do not recommend it. If you have already purchased Flume Pro, you can migrate your purchase into a licence.
Flume for Mac via Setapp includes Flume Pro's features by default and no upgrade is necessary.