No account required
Projects, tasks, time blocks, versions and reminders all work on the device with no account and no connection. Offline is the primary mode, not a degraded one — the app is fully usable on a plane, and changes made there are synced when it can next reach the server.
What signing in adds
An account gives you sync across your devices, GitHub repository connection, and team features. Projects, tasks, time blocks and versions travel with the account, so a second device continues where the first stopped.
Attachments are deliberately not synced. They are the largest thing in the database and the least useful to move; keeping them local keeps sync fast and predictable.
Signing out
You choose whether to keep the local copy or clear it. Signing out also forgets the entitlement held on the device: a phone that has ever been signed into a paid account should not stay paid for whoever picks it up next. Nothing is revoked on the server and no purchase is affected — signing back in returns it immediately.
Teams
A team shares projects, with roles governing what each member can do, and an audit trail behind changes. Release approval builds on it: a chain of sign-offs recorded against a version before it ships.
Collaboration notifications arrive by email first. A team invite is addressed to someone who, by definition, has no device to push to yet.
Where it stops
DevDeck is not a chat tool, a code host or a CI system. It syncs plans and the record of what shipped; everything else stays where it already lives.