StipaCaller vs Iris Chat

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 and videos • 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

Iris Chat is a private messaging app for direct and group chats. Your secret key and message history stay on your devices, and encrypted messages move through message servers you choose. Use Iris Chat to: - Chat one-to-one or in groups - Link your devices with a code - Attach photos and files - Keep messages moving nearby over Bluetooth or Wi-Fi when you turn it on - Block or report unwanted contacts Iris Chat does not include third-party analytics, advertising SDKs, or behavioral tracking.