Get a report on Popular books & reference apps in the united states. For $49 you can buy
a CSV file that can be imported into any spreadsheet or analysis tool.
You will get this app list with 29 different data attributes including:
The sample file download button below gives you a sample file which contains the first 5 apps.
You can download the file instantly after paying with PayPal.
You will also get an email with an invoice and download link that you can
use in the next 24 hours.