Coming soon
No internet · No servers · No accounts
LEAPTRX finds people around you over Bluetooth and delivers end-to-end encrypted messages over whichever link is there — a shared Wi-Fi network when one exists, Bluetooth when none does. No internet either way.
Not yet on the App Store or Google Play · iOS 16+ · Android 8+
Two radios, two jobs. Knowing which does what explains almost everything about the app.
Your device discovers others over Bluetooth — no sign-up, no directory, no lookup service anywhere.
Messages travel over a shared Wi-Fi network if there is one, or over Bluetooth if there is not. Whichever connection is available carries the message. Neither uses the internet.
A message can hop through other devices running the app to reach someone out of range. Each hop is encrypted for its recipient, so a device passing it along cannot read it.
X25519 key agreement, HKDF-SHA256, ChaCha20-Poly1305. Sender identity and a replay counter are bound into the ciphertext, so a relay cannot forge, downgrade or replay a message.
Compare a six-word safety phrase in person. If a contact\'s key ever changes, the app warns you and the warning survives a restart.
Your identity is a random name like quiet-otter-42. No phone number, no email, nothing to sign up for.
Group conversations, photos, replies, reactions, read receipts and typing indicators — the things you expect, without the server behind them.
Set a conversation to delete itself after an hour, a day or a week. Lock the app behind Face ID or a fingerprint.
No analytics, no crash reporting, no advertising SDKs, no telemetry of any kind. The app makes no network request of its own.
Real screens, captured from the app itself.
