Buy it once.
A one-time purchase with updates included. Never a subscription.
What you pay for
the archive
Yours, in any case
Plain SQLite on your disk, readable with no brev process running. Nothing about the archive depends on a licence.
brev
Price not yet set
One purchase covers the client, live sync and the agent verbs, with updates included. brev is not on sale yet; the number is announced here when it is.
platform
Linux today
The archive layout and the user service are Linux's. No other build exists.
Download
There is no download yet. Signed releases and brev update are on the roadmap; until they ship, brev is built from source with cargo build --release.