App market keeps the ranking information only for 2 weeks.

Calcutta noticed this point and tried to resolve it.

So now, Calcutta provides marketing insight with lots of data collected by Calcutta.

Calcutta’s ranking system records information of high ranks for a long time.

We also collect the apps within No. 300 and convert them to score.

Calcutta Rank provides ...

All of the data are independently built by Calcutta communication,

but It is also objective information which is not randomly manipulated the official ranking data of Apple.

In case of Android market’s data, we record every Google Korea’s data and arrange the Ranking data.