Solid Joys is the daily devotional app from the ministry of John Piper, and it is now available free for Android devices. Get it from Google Play. (It’s also available in iTunes for Apple devices).
The app is a compilation of 365 of the best excerpts from Piper's printed books and online content that are able to stand well on their own. The goal is that you'll be able to dive in for just a moment each day and come away with something solid to feed your joy in God.
For more details about the app, see its description in Google Play or iTunes.
Please let us know what you think of the app by reviewing it on Google Play or iTunes, or by emailing us at mobile@desiringGod.org.