Buying a Lifetime license ($39) will entitle you to all Harmony versions. You'll also automatically be given access to the feature requests Trello page.
Buying a basic license ($15) will entitle you to Harmony 0.9.1 only.
Hunter coupon activated 😎! $29 instead of $39 for the lifetime license
Mailer coupon activated 😎! $29 instead of $39 for the lifetime license.
Licenses are per-user, so you can enjoy Harmony on as many computers and operating systems as you wish with your license.
The prices might increase in the future.