Inviz - Off Grid Messenger

Inviz is a messenger that works when nothing else does. No internet, no mobile signal, no servers, no accounts and no phone numbers. Your messages travel directly between phones over a Bluetooth mesh, hopping from device to device to reach people beyond direct range.

If you can see the person, you can probably message them. If you can't, the mesh will try to carry it there for you.

MADE FOR THE PLACES YOUR SIGNAL ISN'T

Inviz was built for the moments other apps give up on. On a flight, switch to airplane mode, leave Bluetooth on, and chat with your travel companions a few rows away. On a hike or a campsite far from the nearest mast. At festivals and stadiums where the network collapses under the crowd. On the underground, at sea, abroad without roaming, or anywhere you would rather not depend on infrastructure at all.

Every phone running Inviz quietly strengthens the mesh for everyone nearby. Messages for someone who is temporarily out of range can be held and passed on when they reappear.

PRIVATE BY DEFAULT

Direct messages are end-to-end encrypted using the Noise protocol. Keys never leave your device, and you can verify a contact in person by comparing a short safety number. The public Broadcast channel is exactly what it says: an open, unencrypted channel for everyone around you, clearly labelled so you always know which is which.

There are no accounts to create and nothing to sign up for. Inviz collects no data, shows no ads and contains no trackers. If you ever need to walk away, a single panic wipe erases your identity, contacts and message history for good.

THOUGHTFUL WHERE IT COUNTS

Inviz manages the radio carefully, adapting how often it scans so the mesh stays useful without draining your battery. Delivery receipts tell you honestly what has and hasn't arrived, because a mesh is not a server and pretending otherwise helps no one. The interface is clean and modern, with light and dark themes and a colour accent you can make your own.

FREE, PROPERLY

Everything that makes Inviz useful is free and always will be. Messaging, encryption, relaying, the whole mesh. A small one-time purchase unlocks some cosmetic extras, like gradient themes and matching app icon colours, for those who want to support development. No subscriptions, ever.

GOOD TO KNOW

Bluetooth range is naturally short. The mesh extends it by relaying through other Inviz users, so it works best when a few people nearby are running it too. Delivery is best-effort by design: honest, serverless messaging rather than guaranteed cloud delivery. Airline policies on Bluetooth use vary, so check yours before takeoff.

Grab a friend, turn it on, and see how far your words can travel without a network.

** Users are responsible for using Inviz safely, ethically, responsibly, and in accordance with all applicable laws and regulations in their jurisdiction. The developer accepts no responsibility for misuse of the app or for any consequences arising from its use. **