An iOS messaging app built on Reticulum for encrypted, off-grid communication. Supports text messaging, voice calls, location sharing, and file transfers over TCP, local WiFi, BLE, and LoRa radio.
Requires Xcode 15+ and iOS 17+.
Open ColumbaApp.xcodeproj in Xcode, select a signing team, and build for your device.
Dependencies are resolved automatically via Swift Package Manager.
- ReticulumSwift — Core Reticulum protocol stack
- LXMFSwift — LXMF messaging layer
- LXSTSwift — Voice call transport
- MapLibre — Offline-capable map rendering
- This work was partially funded by the Solarpunk Pioneers Fund
- K8 and 405nm for generously donating for an iPhone
- Reticulum, LXMF and LXST by Mark Qvist