Lock it with a password, and get yesterday’s library back
App lock keeps the library sealed until you type your password. Daily snapshots and a trash that keeps profiles for 30 days cover the mistakes.
Mosaic is a desktop app
Email yourself the link and open it on your computer.

App lock, backups and trash, step by step
Turn on app lock
Set a password in Settings › Security. With it on, a copied disk is ciphertext and nothing decrypts without the password.
Backups run daily
Mosaic snapshots the library once a day and keeps a week of them unless you change it.
Trash, then purge
Trashing a profile closes its browser first, then keeps the profile 30 days. Restore it, or purge it for good.
Without app lock, the data key sits in a file beside the data that only your user account can read. That stops other users on the computer; it does not stop someone who copies your whole user folder.
Works with
Your profiles, cookies and proxies stay on your computer
Profiles, cookies and proxies stay on your computer.
Downloads kept apartEach profile saves its files into its own folder
A downloads folder per profile, out of Spotlight.
Cookie jarsBring a logged-in session in, take it out, keep it sealed
Import, export and keep cookies, encrypted on disk.
App lock, backups and trash is in every plan
Free holds 3 profiles and 10 profile creations, with the same engine as Pro. Pro is $49 a month for any number.
Mosaic is a desktop app
Email yourself the link and open it on your computer.