Free for one. $10 for all.

One project, everything in it: the map, the proof, the AI team and checks on every change.

$10a month

Every project, deploys with your confirmation, merging by the lead and proof reports for clients.

$50a year

The same Pro for a year: five months of the monthly price.

$100once

A licence for life: Pro with every update, no subscription at all.

The first ten accounts pay less: $5 a month or $30 a year. Your agents’ own subscriptions pay for the tokens; Vowline adds nothing on top.

Start free. Paying for Pro opens soon.

About the plans

What counts as a project?: One git repository. A workflow joins several repositories so one task can change all of them; on Free a workflow holds one project, on Pro as many as you need.
Do I pay for the AI too?: No. Your agents run with their own subscriptions or keys: Claude Code, Codex or Cursor. Vowline adds nothing to what they cost and shows how much of each subscription is left.
What does the licence for life include?: Pro on your account for life, with updates, for $100 once. No subscription.
What is the first-ten price?: The first ten accounts pay $5 a month or $30 a year for Pro.
Does my code leave my computer?: No. Vowline runs on your computer and works in git worktrees next to your repository. Agents run with your own logins; Vowline never sees their passwords or API keys. Your account page only gets counts: project names, how many promises are proven, tokens per day and tasks solved.
What does “proven” mean, exactly?: The code behind a promise passed the tests and linters you approved, on that exact commit, and has not changed since. If the code changes, the promise drops back until it is checked again.