Calabash enables you to write and execute automated acceptance tests of mobile apps. Calabash is cross-platform, supporting Android and iOS native apps. It is open source and free, and has a company, LessPainful, backing and developing it.

Calabash consists of libraries that enable test-code to programmatically interact with native and hybrid apps. The interaction consists of a number of end-user actions. Each action can be one of

Gestures
Touches or gestures (e.g., tap, swipe and rotate).
Assertions
For example: there should be a "Login" button or the web view should contain an "<h1>" element with the text "Hello".
Screenshots
screendump the current view on the current device model

Calabash could be compared to Selenium WebDriver. However, it is important to realize that interacting with a web app from a desktop computer is vastly different than interacting with a native app using a touch screen. Calabash provides APIs that are specialized to native apps running on touch screen devices.

Feature: Rating a stand
  Scenario: Find and rate a stand from the list
    Given I am on the foodstand list
    Then I should see a "rating" button
    And I should not see "Dixie Burger & Gumbo Soup"

    When I touch the "rating" button
    Then I should see "Dixie Burger & Gumbo Soup"

    When I touch "Dixie Burger & Gumbo Soup"
    Then I should see details for "Dixie Burger & Gumbo Soup"

    When I touch the "rate_it" button
    Then I should see the rating panel

    When I touch "star5"
    And I touch "rate"
    Then "Dixie Burger & Gumbo Soup" should be rated 5 stars

Although we focus on Cucumber, Calabash can be used to write automated functional and acceptance tests using any Ruby-based test framework, and JVM-based languages will be supported too!