Buy Mycelium Flow
US$15, once. No subscription, no renewal.
A licence is one purchase, not a plan — there is nothing to renew and nothing that stops working on its own. Updates are included and arrive through Flow's own built-in updater.
One licence is for one person: use it on the Macs you own yourself.
Flow has a trial. The app reminds you after about two weeks, but it never locks you out. Buying is the honour-system way to keep it and support the work.
After you buy
Paddle, TaioTech's merchant of record, emails you a receipt. Then in Flow, open About and mark it purchased.
Paddle handles payment and sales tax; Flow itself never sees any payment details.