Mesh over Bluetooth LE, TCP, or Reticulum

A new Android app called Columba just swooped into the off‑grid chat scene promising private messaging and even voice calls without the internet, cell towers, or any central servers. It plugs into “mesh” networks—basically phones talking directly to each other—over Bluetooth, Wi‑Fi, long‑range radio, or regular local network. Think walkie‑talkie vibes, but for texts and calls, with encryption and maps you can download for when the world (or your Wi‑Fi) goes dark.

But the real action is in the comments. One user immediately asked the forbidden question: How does this stack up to Meshtastic? That lit the powder keg. Another cheered the “offline‑ish” future, then dunked on the long‑range radio option (LoRa), joking you’ll be sending “Twitter‑sized messages” because the bandwidth is painfully tiny. Cue the meme parade: “It’s like a note passed in class… across the city.”

Meanwhile, a third voice channeled every frustrated tinkerer: “Seems a little complicated though?” They want simple toggles for “Bluetooth only” or “no internet” modes, not a weekend of settings spelunking. Fans countered that Columba’s the point: no accounts, no tracking, just identities you control, QR codes to swap contacts, and even custom colors to “rice” the app to taste.

So where’s the split? Optimists say Columba is a fresh, friendly doorway into resilient, private comms. Skeptics say we’ve seen a dozen of these, and the Achilles’ heel—slow radio speeds and fiddly setup—still hurts. The dove‑named app promises peace; the comments brought the chaos—and honestly, it’s glorious.