Y Communicator vs StipaCaller

Y Communicator is private messaging without accounts, phone numbers, or email addresses. Create a private session with someone you trust, scan a QR code or share an invitation link, and start messaging once the app shows the connection is secure. Your messages are encrypted on your device before they leave it, so relay servers cannot read them. Built for Everyday Privacy - No login, account, phone number, or email required - End-to-end encrypted messages - Offline message delivery while your contact is away - Undelivered messages expire from the network after a short time - Rotating message addresses help reduce long-term tracking - App lock with Face ID, Touch ID, or passcode Private by Design Y Communicator does not require a central account or public profile. Each conversation is a private session between devices, protected by keys held only by you and your contact. Messages are held on the relay network only while waiting for delivery. They are deleted when retrieved or when they expire, with a maximum network holding time of 2 hours. How to Connect 1. On the first device, tap Add Session and create a new session. 2. Show the QR code or share the invitation link. 3. On the second device, tap Add Session and scan the QR code or paste the link. 4. Keep Y Communicator open on both devices while they connect. 5. When the session shows Secure, start messaging. Good For - Private one-to-one conversations - Messaging without sharing a phone number - Short-lived secure communication - Conversations with minimal personal information What Y Communicator Cannot See We cannot read your message content. We do not require your name, phone number, email address, or account login. The relay network is designed with no permanent message storage and no server logs. Technical Details Y Communicator uses a post-quantum end-to-end encryption design: - Kyber-1024 for secure key exchange - AES-256-GCM for message encryption - Dilithium-5 digital signatures for message authenticity - Decentralized zero-trust message routing - Memory-only relay nodes with no persistent storage - Automatic network message expiration, maximum 2 hours - Rotating session identifiers to reduce linkability over time

StipaCaller is a small messenger for families, made in Finland, EU, by Lesti Software Oy. Your data is stored in Finland, and your messages are end-to-end encrypted, so even we can't read them. Call and write to the people closest to you — parents, grandparents, children — wherever they live. It's simple enough for grandparents: answer a call, look at a photo, send a voice message. Private by design • Messages, photos and calls are end-to-end encrypted: only you and the people you're talking to can read and hear them, not us. • No phone number needed: everyone picks a username. • No ads, no tracking, no analytics, and no address-book upload. • Notifications never contain the text of your messages; messages are decrypted on your phone. What you can do • Voice and video calls • Messages, photos, videos and voice messages • Family group chats • See when a call can't get through, or the other phone is on silent, and leave a message instead • Missed-call notifications with one-tap call back For your whole family Start a family in the app and invite your relatives with a link or a QR code. The first 7 days are free from when your first relative joins; after that, one monthly subscription covers you and up to 5 family members. Already invited? Just tap the link you received. Permissions • Microphone: for calls and voice messages • Camera: for video calls and the photos you choose to send • Notifications: for incoming calls and messages Terms of Use: https://stipacaller.lestisoftware.fi/eula.html Privacy Policy: https://stipacaller.lestisoftware.fi/privacy.html