Do you want to know the download number of that App?
"Rank＜＞Sales" allows you to estimate the sales from the ranking in the App Store, or vice versa.
It also tells you the total download number of all the Apps, that is the market size.
It may also allows you to estimate the sales amount from the ranking in a given market other than the App Store.
The main screen consists of three areas: the uppermost blue area for data inputting, the middle green one for estimation, and the lowermost numerical keypad.
After touching one of four buttons in the green area, input number then you will find estimated value on the opposite button.
At the first launching, the default data for estimation are of free-overall market in Japan.
In order to estimate values in a defferent country or category, input your own data into the blue area.
It is recommended that two pairs of ranking and download number differ at least twice.
You can also input various data which are available at the support site or by checking #RankDL tweets on Twitter.
URL scheme is "net.nousnou.ranksales:".
This App uses the original approximate formula and accuracy is not warranted.