Stolo Systems

Reticulum-based messenger

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Stolo is an encrypted messenger that built off of Reticulum and LXMF Out of the box it is a private, end-to-end encrypted messenger: no account, no phone number, no sign-up. Your identity and your history live only on your device, and Stolo's gateway relays your messages across the internet. When you need more, the same app becomes your own network. Create a network, share one invitation, and everyone who joins is in each other's contacts, trusted, automatically. Phones link directly over Wi-Fi and cellular, and optional long-range LoRa radios carry messages where there is no signal at all. Messages to someone out of range wait and are delivered when they come back. What you can send, on or off the grid: • Messages, photos, and voice notes, end-to-end encrypted. Only the people in the conversation can read them. Not us. • Live GPS positions on a built-in offline world map. See yourself and your team with zero connectivity. Under the hood, Stolo is built on Reticulum, the open cryptographic mesh stack, and sets up in a minute with no config files. Used for backcountry trips, maritime, job sites, disaster response, and everyday group chats that should stay between the people in them. Built on privacy. Works every day, everywhere, and keeps working when nothing else does.

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• Stolo radios: pair a radio running Stolo firmware, such as the SenseCAP T1000-E, over Bluetooth with no code to type. Rename it, check its battery, and change its radio settings from Connections. Get the firmware at stolo.io/download. • Clearer radio pairing: tap a radio to pick it, then press Connect. If a radio isn't accepting new phones, the app tells you how to open pairing on it. • Guided setup for more connection types: UDP, I2P, an RNode on your Wi-Fi, and accepting incoming connections. • Less spam: someone who isn't in your contacts now has to attach a small proof of work before their message reaches you. Trusted contacts and network members are exempt. Adjust it or switch it off in Settings → Security → Trusted contacts. • Sending to someone who asks for proof of work no longer floods retries while your phone prepares it. If it takes more than a minute, you can keep going or stop sending.

The developer, Stolo Systems Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Provider
    Stolo Systems Inc.
    Size
    277.4 MB
    Category
    Utilities
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Location
    This app may use your location even when it is not open, which can decrease device battery life.
    Languages
    English
    Age Rating
    4+
    • 4+
    • Contains
      Messaging and Chat
      User-Generated Content
    Copyright
    © 2026 Stolo Systems Inc.