KeyChord App Joins Android Top 10 List

KeyChord – Piano Chords Scales, a music book app that teaches readers how to play the piano, joins the Android Books & Reference App Top Ten list this week at No.3. The app from Umito, is $2.99.’s app has slipped from the No. 1 position on that list last week to the No. 2 slot. WolframAlpha, the long time leader of the list, has regained its No. 1 position.

To prepare for Mediabistro’s upcoming Publishing App Expo on December 7-8, we will be spotlighting the top grossing book apps every week–helping our readers discover and analyze successful content.

Below, we’ve listed the top ten paid Android Books & Reference apps of the week. We’ve linked to the online pages for the individual apps so you can explore the content.

Top Paid Android Books & Reference Apps

1. WolframAlpha


3. KeyChord – Piano Chords Scales

4.NIV Bible

5. Our Daily Bread

6. Moon Phase Pro

7. iKamasutra

8. Aldiko Book Reader

9. Minecraft Pro Full

10. U.S. Cop


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