Top Finance Apps in India: Coin: Coin by Zerodha: Coin is a free mutual fund investment app by Zerodha, one of India's top investment platforms. With Coin, you ... atOptions = { 'key' : 'a8dfc29b76f8e0e43144f40c1f6e4e79', 'format' : 'iframe', 'height' : 90, 'width' : 728, 'params' : {} }; document.write('');