Currency Ratios in trade mobile app

Hello i am student and developed mobile app for POE Trade.It will show the currency exchange ratio on trade market currency.poe.trade and recent trade offers.
https://play.google.com/store/apps/details?id=com.lambadam.tuna.poecurrency if u help me to develop more app with downloading and rating the app i will be grateful to you guys.
Any feedback welcome.