ProMotion is a RubyMotion gem that makes iPhone development less like Objective-C and more like Ruby. Star this repo to keep tabs on our progress!
Latest commit 88aa3fc Jun 5, 2017 @jamonholmgren jamonholmgren committed on GitHub sized


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ProMotion was created by Infinite Red, a web and mobile development company based in Portland, OR and San Francisco, CA. While you're welcome to use ProMotion, please note that we rely on the community to maintain it. We are happy to merge pull requests and release new versions but are no longer driving primary development.

apple presentation

Apple presenting on ProMotion, WWDC 2017

iPhone Apps, Ruby-style

ProMotion is a RubyMotion gem that makes iOS development more like Ruby and less like Objective-C. It introduces a clean, Ruby-style syntax for building screens that is easy to learn and remember and abstracts a ton of boilerplate UIViewController, UINavigationController, and other iOS code into a simple, Ruby-like DSL.

# app/app_delegate.rb
class AppDelegate < PM::Delegate
  status_bar true, animation: :fade

  def on_load(app, options)
    open RootScreen

# app/screens/root_screen.rb
class RootScreen < PM::Screen
  title "Root Screen"
  nav_bar true

  def on_load
    set_nav_bar_button :right, title: "Help", action: :open_help_screen

  def open_help_screen
    open HelpScreen

# app/screens/help_screen.rb
class HelpScreen < PM::TableScreen
  title "Table Screen"

  def table_data
      title: "Help",
      cells: [
        { title: "About this app", action: :tapped_about },
        { title: "Log out", action: :log_out }

  def tapped_about(args={})
    open AboutScreen

  def log_out
    # Log out!


Screens Navigation Bars Tab Bars
ProMotion Screen ProMotion Nav Bar ProMotion Tabs
Table Screens Grouped Tables Searchable Refreshable
ProMotion TableScreen Grouped Table Screen Searchable Refreshable
SplitScreens Map Screens Web Screens
ProMotion SplitScreens MapScreen ProMotion WebScreen

NEW [Live reloading!]( Screen Reloading/) Use pm_live to enable it, and on_live_reload in your screen to refresh things.

...and much more.

Getting Started

  1. Check out the Getting Started Guide
  2. Watch the excellent MotionInMotion screencast about ProMotion (very reasonably priced subscription required)
  3. Follow a tutorial: Building an ESPN app using RubyMotion, ProMotion, and TDD
  4. Read the Documentation


Version 2.6.1

This release includes a few new features and bugfixes and is backwards compatible with all 2.x releases.

  • PR #777 New Feature: Add ability to register live reload plugins
  • PR #778 Bugfix: Only update search results table data if possible
  • PR #779 Fix bug where remote images are not shown on first load of table screen
  • PR #787 Fix Travis CI build from failing when RubyMotion is up-to-date
  • PR #796 Fix iOS 10 from crashing when determining supportedInterfaceOrientations for UIImagePickerController
  • Other minor bugfixes and documentation updates

Version 2.6.0

This release includes a few new features and bugfixes and is backwards compatible with all 2.x releases.

  • PR #773 Add a on_continue_user_activity delegate method
  • PR #766 Fix nav_bar_button class method
  • Other minor bugfixes and documentation updates

Version 2.5.0

This release includes some new features and bugfixes and is backwards compatible with all 2.x releases.

  • PR #763 Adds footer_view to TableScreens
  • PR #705 Adds split-screen support for large iPhones
  • PR #736 Adds the index path when deleting a cell
  • Several other bugfix PRs

Apps built on ProMotion

Apps built on ProMotion

Your app

Open a pull request! We love adding new ProMotion-built apps.

API Reference

We've created a comprehensive and always updated wiki with code examples, usage examples, and API reference.

ProMotion Documentation



ProMotion is not only an easy DSL to get started. The community is very helpful and welcoming to new RubyMotion developers. We don't mind newbie questions.

The quickest way to get help is to join the Motioneers Slack Group. If you still need help, feel free to open an issue on GitHub. If we don't respond within a day, tweet us a link to the issue -- sometimes we get busy.

Premium Support

ProMotion, as an open source project, is free to use and always will be. Infinite Red offers premium ProMotion support and general mobile app design/development services. Email us at to get in touch with us for more details.



Core Team

Other Contributors