Most KGKV apps are local-first by design. These aren't — and that's a deliberate, structural choice, not a departure from those values. Cross-device sync and AI processing both genuinely require a server. Where that's true, we build it, and we're specific about exactly what leaves your device and why.
Why these apps are different: a document vault you can reach from a new phone, or an AI assistant that can actually search across your data, can't work purely on-device. So these apps have real user accounts and a real backend — and in exchange, each one below states plainly what that means for your data, not just that an account exists.
The one place that knows the answer when you ask it something about your life — an encrypted document vault, home inventory, tasks, calendar, budget, and notes, tied together by an AI assistant that can search across all of it. Free tier is genuinely local-only; Pro syncs to the cloud with a zero-knowledge vault for your files.
Shared household budgeting — an account and Firebase-backed cloud sync so you and a partner can see the same budget update in real time. See our privacy policy for exactly what's stored.