PommeCore vs CairnOS

PommeCore is the full-featured companion app for MeshCore LoRa mesh radios — a decentralized, off-grid messaging network that works without internet, cell towers, or servers. Everything runs over long-range LoRa radio, directly between devices. MESSAGING Send and receive direct messages with real-time delivery tracking (Sending → Sent → Delivered, with round-trip time). Channel (group) messages broadcast to everyone on the mesh. Reactions and quoted replies are interoperable with MeshCore One. Undelivered messages retry automatically, then flood the mesh. CONTACTS & CHANNELS Organise contacts with favourites, nicknames, notes, and groups. Mute or block individuals. Each group and channel has its own notification mode and sound. Export and import contacts via QR code or meshcore:// URLs. MESH MAP See all contacts with GPS on an interactive map. Tap a pin to open that contact's chat. Enable position trails for movement history. The link quality overlay draws colour-coded lines (SNR) to contacts in range. RADIO SETTINGS & TOOLS Configure frequency, spreading factor, bandwidth, coding rate, and TX power from the app. Radio Stats, RF Monitor with Packet Log, Line of Sight analysis, Radio Calculator, Airtime Calculator, and Frequency Scanner are all included. BACKUP & UPDATES Export your radio configuration as a .meshprofile file. Firmware update checker alerts you when a new release is available. Over-the-air ESP32 firmware updates via WiFi. REMOTE MANAGEMENT Administer repeaters and room servers over the mesh — change names, frequencies, routing scope, and advert intervals without physical access. WIDGETS & WATCH Home screen and lock screen widgets show connection status, battery, and unread count. The watchOS companion lets you read and reply to DMs and channel messages from your wrist. iPHONE, iPAD & MAC One app runs natively on iPhone, iPad, and macOS (Apple Silicon and Intel). Connects via Bluetooth LE, WiFi, or USB serial on Mac. LANGUAGES English, German, French, Spanish, Italian, Dutch, Portuguese, Czech, Polish, Ukrainian, Japanese, Simplified Chinese. ACCESSIBILITY VoiceOver, Dynamic Type, Differentiate Without Color Alone, Dark Mode, Voice Control. PRIVACY No account required. No servers. No data collection. All communication is peer-to-peer over LoRa radio. iCloud sync for nicknames, notes, groups, and settings uses your private iCloud account. HARDWARE REQUIRED A MeshCore-compatible LoRa radio running Companion firmware is required. Recommended: Compatible Mesh radio with latest MeshCore Companion firmware IN-APP PURCHASES Tip Jar ($0.99–$9.99) — voluntary support, no functional gating. PommeCore for Apple Watch ($1.99, one-time) — unlocks the watch companion app. All other features are free.

Cairn is a companion app for MeshCore LoRa mesh radios. Pair your radio over Bluetooth or WiFi and send messages through a community-built network of radios and repeaters, with no cell service, no internet and no account. MESSAGING - Direct messages, channels and room servers in one inbox, with filters - Public, private and hashtag channels; share or join a channel by QR code - Delivery status, with retry for failed sends - Emoji reactions, @mentions, forwarding, search and text selection - Path details for each message: every hop on a list and a map - On-device translation of incoming messages - Chats kept on a Cairn touch radio come over to the app when you pair - Block contacts or channel senders, filter keywords and mute conversations - Optional link previews, with a warning for known malware links DASHBOARD - Battery, network, radio, GPS, contacts and chats at a glance - Sunrise and sunset for your position and the radio's temperature sensor - Radio presets by region, or set frequency, bandwidth, spreading factor, coding rate and TX power yourself NODES & REPEATERS - Saved and heard nodes, with search, sort, filters and a card or list layout - A page for every node, with a map, readings and quick actions - Log in to your repeaters and room servers to see status, telemetry, neighbors and an SNR map, then change settings, access lists and regions or use the remote CLI - Send commands to your own companion radios over the mesh (MeshCore 1.18 firmware) - Telemetry history charts kept on your phone - Contact groups, QR sharing and a manual path editor SPECTRUM - Live noise floor and packet traffic on your frequency - Signal margin, airtime share and packets per minute - With a Cairn radio: the radio's own Channel view, with its trace, density heat map and 24-hour noise floor MAPS & GPS - Mesh map with standard, satellite and topographic layers - Live traffic layer: the links packets crossed lately, and each new packet as it arrives - Download map regions for offline use - Radio and phone GPS side by side, with a compass and a navigation HUD that points the way to any node TOOLS - Network Health, Scan for Nodes, Trace Path, Line of Sight with terrain and Fresnel zone, RX Log and a CLI terminal - Sign and verify messages with your radio's identity IN THE CAR & AROUND iOS - CarPlay: a dashboard of your radio, mesh, messages and location, a GPS page, and messages you hear and answer with Siri - Siri and Shortcuts: check radio status, send a message or send an advert - Live Activity and Dynamic Island with connection, battery and unread count - Multiple windows on iPad MAKE IT YOURS - Choose a color, gradient or photo background with glass cards over it - Give any node a photo or a color: its type's color, one of twelve shades or any color you pick - Backup and restore, plus CSV and GPX export PRIVACY Your messages travel radio to radio. Cairn has no accounts, no analytics and no developer server. Nothing is sent to the developer. REQUIREMENTS Requires a LoRa radio running MeshCore companion firmware, connected over Bluetooth or WiFi. Maps, link previews and Line of Sight elevation use the internet when it is available. Requires iOS 18 or later. Cairn is free and open source software under the GNU GPL v3, built on the work of the open-source MeshCore app community. Source code is linked from our support page.