Without internet and on several phones
What works without internet and how your changes carry over.
Check-ins, edits, archiving and deleting work without internet. They show right away and are saved everywhere once you're back online; a small mark shows what's still waiting.
Adding a new habit needs internet, so we can check your plan and that the name isn't already used.
Two phones
Sign in with the same account on both. If you check in the same habit on both phones, you'll still have a single check-in. If you edit the same habit on both without internet, we'll ask which version to keep.