StipaCaller

A small, calm messenger for family and friends. End-to-end encrypted. Invite-only — no phone numbers, no ads, no algorithms picking what you see.

StipaCaller is a small, invite-only messaging and calling app for closed groups — family, friends, anyone who wants their conversations to stay between the people who were invited.

Every chat is end-to-end encrypted. Voice and video calls run over a self-hosted backend, not a third-party cloud. There are no ads, no algorithms, no public discovery, and no phone number required.

Sign-in is by invite code only. New users join when someone already on the network invites them — there's no public sign-up form, and accounts can't be discovered by searching for a name or number.

Designed for small networks where trust is direct and the surface area is intentionally small. Built for people who want a simple way to stay in touch without their conversations becoming someone else's training data.

Features:
• 1:1 and group chats with end-to-end encryption (libsodium) • Send and receive voice messages • Send and receive photos • Voice and video calls over a self-hosted backend (1:1 only)
• Invite-only — no public sign-up, no accounts findable by phone number • No ads, no telemetry, no third-party analytics
• Username-based addressing — no phone number required