Yantagram: Offline Mesh Chat

Stay in touch when your phone has no bars. Yantagram sends end-to-end encrypted messages directly from phone to phone over Bluetooth. No internet, no cell service, no phone number, no account. HOW IT WORKS Every phone running Yantagram becomes part of a mesh. Your message travels to friends nearby, and phones in between can pass it along to reach people further away. When a friend comes back into range, anything they missed catches up automatically. Online? Turn on the optional internet relay to reach friends anywhere. It routes messages by anonymous codes that change every day, so it never learns who you are or who you're talking to. MADE FOR • Flights and cruises without paying for Wi-Fi • Festivals, concerts and stadiums where the network is overloaded • Hiking, camping, skiing and road trips out of coverage • Power cuts, storms and emergencies • Anyone who wants a messenger that doesn't need their phone number PRIVATE BY DESIGN • End-to-end encrypted 1:1 and group chats. Only the people in the chat can read them. • No phone number, email or account. Pick a nickname and start. • Add friends in person by scanning their QR code, which also verifies it's really them. • Nearby phones can't tell who you are. Only your contacts recognize you. • Disappearing messages, from 30 seconds to 7 days after they're read. • Panic button: triple-tap to erase every message, contact, and your identity. • Everything stored on your phone is encrypted. • No ads, no analytics, no tracking. FEATURES • Group chats with up to 32 people, with admins who can add and remove members • Delivery receipts, so you know your message arrived • See who's nearby on the mesh at a glance • Share your contact code as an image, or scan one from your photos • Notifications that can show just the sender's name GOOD TO KNOW Friends need Yantagram installed to receive your messages. Bluetooth range depends on your surroundings, and the mesh works best when more people nearby are using it. Yantagram needs Bluetooth permission to find nearby phones. Yantagram is free and independent. If it helps you, you can leave an optional tip in Settings. Tips don't unlock anything; every feature is free for everyone.