You've pasted a .env into a Slack, DM to unblock a teammate, and it's still sitting there. Secrets managers usually fix this with a whole platform: a CLI, accounts, sync engines, infra to run. justenv is lighter. A native Mac app that encrypts your .env on-device and shares it with links that expire or burn after one open. No CLI. No account needed to receive. Keep prod, staging and preview separate. Free for solo devs.