Mob — BEAM-on-device mobile framework for Elixir.

OTP runs on the device. Screens are GenServers. The UI is rendered by Compose (Android) and SwiftUI (iOS) via a thin NIF. No server required.

Quick start

defmodule MyApp.HomeScreen do
  use Mob.Screen

  def mount(_params, _session, socket) do
    {:ok, Mob.Socket.assign(socket, :title, "Hello, Mob!")}
  end

  def render(assigns) do
    %{
      type:  :column,
      props: %{padding: :space_md},
      children: [
        %{type: :text, props: %{text: assigns.title, text_size: :xl}, children: []}
      ]
    }
  end
end

Modules

• Mob.App — app entry point and navigation declaration
• Mob.Screen — screen behaviour and GenServer wrapper
• Mob.Socket — assigns and navigation API
• Mob.Theme — design token system
• Mob.Renderer — component tree serialisation
• Mob.Test — live device inspection and testing helpers

See the Getting Started guide to create your first app. See Architecture & Prior Art for how Mob compares to LiveView Native, Elixir Desktop, React Native, Flutter, and native development.