Messaging, photos, shared documents, smart home — all in one place, all end-to-end encrypted. No ads, no tracking, no algorithms. Just your people, in your space.
No social media mechanics. No engagement algorithms. Every feature is designed to make real life easier for real groups.
Group and one-on-one messaging, fully end-to-end encrypted. Share links, photos, plans. Your server never sees a word of it.
A private group photo library, encrypted before it leaves your device. Trip photos, event galleries, memories — stored securely, shared easily.
Control lights, locks, cameras, climate from one app. Home Assistant integration gives everyone the right access to the right things.
A private AI that knows your group — tasks, schedules, preferences. Bring your own API key for full power, or use the built-in local model free.
Shared documents — leases, insurance, rosters, meeting notes — encrypted on-device. Full audit trail tracks every access.
Shared calendars, task lists, grocery lists. The everyday coordination that keeps a group running, without the group chat chaos.
Shared calendars, chore tracking, photo albums, smart home controls. Age-appropriate access for kids. Everything a household needs under one roof.
Schedule sessions, share campaign notes and maps in the vault, coordinate in chat. Your D&D campaign lore doesn't belong on a corporate server.
Bowling teams, running clubs, book clubs. Shared schedules, event photos, group chat, document storage. All the logistics in one private place.
The 6 people you actually want to talk to. A private space that doesn't sell your conversations to advertisers or train AI on your inside jokes.
Shared grocery lists, chore rotation, bills tracking, smart home access. Everyone gets the door code. Nobody reads everyone's texts.
A private workspace without the enterprise price tag. Chat, docs, calendars, and an AI assistant — all encrypted end-to-end.
Casitas uses end-to-end encryption for messages, photos, and documents. Your keys live on your devices — never on our servers. Even if every server were compromised, attackers find nothing but noise.
Built on NaCl — the same cryptography trusted by Signal and the security research community. X25519 key exchange, XSalsa20-Poly1305 authenticated encryption, per-device identity keys.
Download the app and create a space for your group. Invite members by username. Set roles and permissions — who can see what, who can manage what.
Encryption keys are generated on your phone at signup and never leave it. Every message is encrypted before it touches the network.
Enable the modules you need — chat, photos, vault, calendar, smart home, AI. Turn off what you don't. It's your space. Configure it your way.
We built Casitas because we wanted a private space for our family — and realized every close group deserves the same thing. Join the early access list and we'll send you a TestFlight invite.