As seen on the Shopify Engineering Blog!

Tophat is the best way to install and test any mobile application. Just add CI.

With Tophat, you can skip building branches locally. Tophat hosts a lightweight web server, allowing you to easily add Tophat links to your CI pipeline and launch apps right from GitHub.

Quick Launch allows you to add your favourite apps right in the Tophat menu. Need the latest build? Click on the icon and go! Tophat will download the latest version, update the icon, and launch it on your device.

Have lots of devices and only use a couple at a time? Easily pin them to the top of the devices list for quick access.

Customize Tophat to your needs with the Settings window. Adjust preferences, add apps to Quick Launch, or even specify custom tooling paths to make Tophat work for your environment.

There are a number of ways to interact with Tophat so that you can integrate it into your project with ease.

Tophat features a lightweight web server so that you can launch apps using CI artifacts. To handle builds that use separate artifacts for different device types, specify a virtual URL that points to a simulator-only build, and a physical URL that points to a device-only build:

http://localhost:29070/install/<ios|android>?virtual=https://url/to/virtual&physical=https://url/to/physical

Or, for universal builds that work on all device types, use the universal query param:

http://localhost:29070/install/<ios|android>?universal=https://url/to/virtual

For builds that are available using a Tophat API (see API Endpoints):

http://localhost:29070/install?api=https://url/to/endpoint

You can also specify arguments to pass to the application on launch using the launchArguments query string. For example:

&launchArguments=one,two,three

On iOS, these arguments are retrievable using ProcessInfo. On Android, these arguments are delivered to your appʼs main activity via intent argument extras in the TOPHAT_ARGUMENTS key as an array of strings.

For applications that support custom URL schemes, use the tophat:// scheme to launch right into Tophat:

tophat://install/<ios|android>?universal=https://url/to/universal

URL schemes and handling via web server both use the same URL format.

Tophat can be integrated with various tools and projects using tophatctl, Tophatʼs companion command line app. You can use tophatctl to perform the following tasks:

• Manage Quick Launch apps. Pre-populate Tophat with your projectʼs apps in a dev up step.
• Install apps. Install an app by URL or path.

For more details on how to use tophatctl, run the following command after installing the Command Line Helper:

tophatctl --help

For more advanced integrations, Tophat supports requesting artifacts using REST. To support Tophat, a web service must expose an endpoint that returns a response in the following format:

{
  "name": "<App Name>",
  "platform": "<ios|android>",
  "virtual": "<URL>",
  "physical": "<URL>"
}

The endpoint must support basic HTTP authentication with username TOPHAT_APP_TOKEN and any token as the password. The token must be stored as plain text in a local ~/.tophatrc file with no newlines and no spaces. Tophat reads this value and automatically specifies it as part of the Authorization header when making the request.

Client side configuration for API-based application retrieval is supported via the Settings window or tophatctl.

Tophat also adds file associations to *.ipa, *.apk, and *.zip files so you can open artifacts from your device.

The easiest way to run Tophat safely is to build it from source by opening Tophat.xcodeproj using Xcode. Alternatively, you can download a pre-built (but unsigned) binary of the latest release from the releases page.

Tophat requires a few developer tools to be set up. On first launch, Tophat will guide you through making sure everything you need is ready to go.

Tophat requires macOS 14 or later.

• Xcode 15 or newer is required.
• All simulator versions are supported, but physical devices must be running iOS 17 or later.
• Support for physical devices running iOS 16 and earlier is available but will be deprecated in September 2024.

Tophat works with Android Studio and Android toolchains with a working adb and avdmanager environment.

See the contribution guidelines for more information.