ttmsg vs Free to call

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.

Ever wanted to call a friend but weren't sure if it's a good time? Free to Call solves that. Set your availability status and let your friends know exactly when you're free to talk — no more awkward "is now a good time?" texts. How it works: - Sign up with your phone number - Connect with friends on the platform - When you have free time — driving, waiting, on a break — toggle your availability on - Your friends get notified instantly and can call you with a single tap - Set a timer so your status resets automatically, or stay available indefinitely Stay connected, on your terms Add a short status message like "driving home" or "on lunch break" so friends know the context. Choose to be available now or set a specific end time — 15 minutes, an hour, or whatever works for you. Find your people Browse all users, sync your phone contacts to discover who's already on the app, or invite friends via SMS. Send and accept friend requests to build your network. Privacy first Your phone number is only visible to confirmed friends. Availability notifications are rate-limited to prevent spam. You're always in control of who can reach you and when. Features at a glance: - One-tap availability toggle with optional status message - Timed availability with automatic expiry - Real-time push notifications when friends become available - Native phone dialer integration — no in-app calling, just real calls - Contact sync to find friends already using the app - SMS invites for friends not yet on the platform - Multi-language support (English & Czech) - Light and dark mode - Full profile customization with avatar, username, and spoken languages - Granular notification preferences Your data, your choice You can delete your account at any time from Settings — all your data, friendships, and profile information will be permanently removed. For more information, please review our Terms of Service and Privacy Policy, accessible from within the app's Settings screen and during onboarding.