The Jesus Calling app is no longer available for Android users as of 2015, according to AppBrain. There was a lite version of the app for Android announced in 2011, but it has since been removed from the market. However, the Jesus Calling book is available through Google Play.
Sarah Young, the author and creator of Jesus Calling, originally published it as a book. Once the book became successful, she created the app so that users could have a mobile version. The app allows users to create notes and save specific passages. Jesus calling is a devotional book about God based on Young's prayer journals.