App · 02 Offline communications
The problem: your phone has a radio and a Bluetooth chip that don't stop working when the cell network does. Sovrinte uses both. The result: text and voice between Sovrinte users without anyone's infrastructure in between.
The problem
Backcountry hikers. Sailors in a flotilla. A van-life convoy crossing a dead zone. A family at a festival. Half the people you need to reach are within walking distance — and your phone tells you you're alone because there's no tower. That's the gap Sovrinte's comms layer closes.
The capability
Bluetooth Low Energy
Auto-discovers nearby Sovrinte phones. Text instantly. Voice on a held-button (walkie-talkie). Background drain is negligible.
Phone-to-phone radio (P2P Wi-Fi)
Higher bandwidth and longer reach than BT. Falls back automatically when devices are mid-range. Voice calls sound like calls, not radio chatter.
Mesh relay
Every Sovrinte phone acts as a repeater. Five phones spread along a ridge let two distant phones still talk through the chain — no extra hardware needed.
The numbers
These are working estimates based on the radio specs in shipping flagship phones and real-world testing in similar mesh networks (Bluetooth 5.x, Wi-Fi Aware, Wi-Fi Direct). Open line-of-sight numbers are the upper bound. Indoor and obstructed environments will be lower — sometimes a lot lower.
| Device class | Direct BT | Direct Wi-Fi P2P | Indoor / obstructed |
|---|---|---|---|
| iPhone 15 / 16 / 17 | ~100–250 m ~330–820 ft |
~200–500 m ~660–1,640 ft |
~20–40 m ~65–130 ft |
| Pixel 9 / 10 / 10 XL | ~100–250 m ~330–820 ft |
~200–500 m ~660–1,640 ft |
~20–40 m ~65–130 ft |
| Galaxy S24 / S25 / S26 | ~100–300 m ~330–985 ft |
~200–600 m ~660–1,970 ft |
~20–50 m ~65–165 ft |
| Older flagships (3+ yrs) | ~50–150 m ~165–490 ft |
~100–300 m ~330–985 ft |
~15–30 m ~50–100 ft |
Mesh relay extends practical reach by chaining: five phones spaced along a ridge can carry a message 1–2 km / 0.6–1.2 mi end-to-end. Twenty phones at a campground or festival can blanket the whole site.
What it feels like
You drop into a canyon. The bars vanish. Normally that's the moment your party becomes invisible to each other. With Sovrinte, you look at the comms screen and four green dots are still there — your spouse, your two friends, the guide. Live, in range.
You text "found the ridge — beautiful." Instant. You hold the call button and say "everyone good?" Voice comes back in a couple of seconds — not crystal-clear like LTE, but understandable. Walkie-talkie quality on demand.
Forty minutes later your spouse hikes about a kilometer (~0.6 mi) further down the canyon. Their dot goes from green ("live") to grey ("last seen 10 minutes ago, 940 m / 0.58 mi east"). The mesh layer keeps relaying their last-known position through the other phones in your party. You always know where they were a few minutes ago, even when you can't hear them right now.
Honest limits
Tower-less. Tower-free.
Be reachable to the people you care about, without depending on the people who own the network.
Pre-order Sovrinte — $149