We most certainly do! CrossFit btwb is available on both Android and iOS devices. It can be found in the "Fitness & Health" section in the app store.
Android app - Visit your Google Play Store and search for it or click this link. It is a free download.
iPhone app - You can access it from your iPhone app or click this link. It's also a free download via the app store.
*Note: It's classified as an iPhone app, in case you were searching for it on your iPad.