ttmsg vs OfflineHarmony Bluetooth Chat

Social networking with no registration, no authentication and no saving of messages. Anonymous too. ttmsg is based on publish-subscribe protocol, MQTT. It works by sending messages to a topic. If someone or something wants to receive messages, they need to subscribe to the same topic. Primary use case for ttmsg is when you want to communicate without any registration and without saving of messages. Just agree the topic, optional password and broker and you're good to go. Agreement of topic and password is done using other means of communication such as talking on the phone or face-to-face. Secondary use case to communicate with devices over MQTT. Sample use case: - You and your friend decide topic and optionally a password. - You then agree the time when you are online. - When the time is right, you both subscribe to agreed topic. - You communicate by publishing messages to topic and respond by publishing message to the same topic. Features, including Premium: - No registration. - No authentication. - No saving of messages. - No knowing who sends or receives messages. - No notifications. If you are not using the app, you won't get any messages. - Encrypted messages, using custom password. - SSL/TLS if broker supports it. - Send images. - Uses multiple 3rd party brokers. - Use your own broker. - UI based on the great command line interface.

Chat, talk, and video call with people nearby — no internet, no router, no accounts. OfflineHarmony lets you message, send voice notes, and video chat with people around you using direct device‑to‑device connections over Bluetooth and peer‑to‑peer Wi‑Fi. No cellular data, no internet, and no Wi‑Fi network required. On a plane, at a school or workplace with blocked internet, traveling abroad, at a crowded event, or in an emergency — OfflineHarmony keeps you connected. KEY FEATURES Offline Messaging — Send and receive texts with no internet or cellular data. Live Video Chat — Real‑time video with nearby people over a direct connection. Voice Messages — Record and send voice notes, with adjustable playback speed. Nearby Group Chat — Connect with several people at once. Scan to Join — The host shows a QR code; others scan to hop in instantly. Private by Design — Messages go straight between devices. No servers store your chats, and no account or sign‑up is required. Encrypted Connections — Data is encrypted directly between devices. Safety Tools — Block or report anyone, right from the chat. Fast Setup — Open the app, find people nearby, and start talking in seconds. OFFLINEHARMONY PLUS — an optional one‑time purchase, no subscription ever. Removes ads and unlocks 5 color themes, 6 custom app icons, faster voice playback, and instant QR joining. Everything you need to chat stays free. PERFECT FOR Flights and travel • Schools and campuses with blocked internet • Festivals, concerts, and conventions • Camping and the outdoors • Emergencies • Cruises and ships • Stadiums and crowded events WHY OFFLINEHARMONY Most chat apps stop working the moment you lose internet. OfflineHarmony doesn't. Text, voice, video, and group chat — all completely offline, all directly between nearby devices. Available in English, Spanish, French, German, Russian, Ukrainian, Korean, Simplified Chinese, and Cantonese. Download OfflineHarmony and stay connected anywhere.