Currency Converter Wordpress Plugin

I need a simple Wordpress plugin that converts the amount between a custom coin let's called it NEWCOIN (priced in USD) and any other cryptocurrency You can see an example here: [login to view URL] But please make it look better as that style does not look good. Also, that currency converter allows to convert to and from any currency, we ONLY want to have NEWCOIN on the left side, and other cryptocurrencies on the right side. 1) It must look good, web 2.0 style 2) Its purpose is so a user can type in the amount of NEW COINS they want to buy, and it will show them the price they must pay in another cryptocurrency (right now we need USD, BTC, ETH and XLM) OR they choose how much of the other cryptocurrency they want to spend, and it will tell them how much of the NEWCOIN they can get 4) It should show a 30x30px png picture for the NEW COIN (use a placeholder) and an icon for the other crypto (use SVG files) 5) It should have a Settings panel from admin side where the admin can set the PRICE of the NEWCOIN in USD. For example, if we decide to start the price of NEWCOIN at $0.50 USD, then it will use $0.50 USD as the value to calculate the price in $USD, BTC, ETH, XLM on the right side 6) In the settings panel, it should also allow a markup % for BTC, ETH, XLM. For example, if currently 1 NEWCOIN = $0.50, and the markup for BTC is set to 5%, then the USD value on which to calculate the BTC value will be $0.50 x 1.05. This must be set independantly for EACH currency (i.e markup for BTC could be 5% but for XLM could be set to 10% etc). The project must be delivered as a Wordpress plugin and must run on our website with no problems (so keep the php/javascript VERY simple) You can use the FREE [login to view URL] API to pull the $USD to XLM, BTC, ETH exchange price