This Friday's recommendation is Book Report. If you sell ebooks on Amazon, or you plan to do so, it's a simple way to track sales and earnings over the lifetime of each book.
Without it, you can still easily see 90 days of sales on the Kindle Direct Publishing Dashboard. But the only way to figure out sales and earnings over the entire life of your books is to manually open multiple reports and tally the numbers yourself.
Last October I did that for the first book in my supernatural thriller series, The Awakening. That was tedious and took a long time, though I was happy to learn that I'd sold nearly 10,000 copies. Had I had Book Report, I could have done it for Kindle sales just by clicking a button. Book Report also shows a piechart of sales and earnings per book and by Amazon company (US versus UK versus Canada, etc.).
Here's the pie chart and the percentages by store for my Kindle ebooks. (The Awakening, Book 1, which has been out the longest, is the biggest slice of pie.)
Book Report is available free to anyone earning less than $1,000 per month through KDP. If you earn more than that, first, kudos to you, and second, it will be only $10 a month, but you can try it free for two weeks–without needing to enter credit card information now. Click on this link if you'd like to try it.
I hope that's helpful.
L. M. Lilly