How accurate is data from Apple?

BookTrakr bases its reports on iBookstore Sales and Trends reports. These reports are occasionally off by one or two sales (as compared to the monthly financial reports), so the numbers reported by BookTrakr may not precisely match your financial reports.

Further, since the Sales and Trends report only has 13 weeks of historical data, your Apple data will only go back 13 weeks from when you signed up for BookTrakr.