The purpose is to simply input your total amount of each currency and you can see your total portfolio worth and the current change from the price bought to the total price now.
Not too sure what you mean by selling of coins, care to elaborate? Maybe I can implement that too
OK, apologies, I misunderstood the nature of the tool. I thought it was more of an "accounting" tool.
By selling coins, I mean ... selling them on an exchange instead of buying them.
Seems to me your tool is currently only good until somebody starts trading coins for USD, because there is no way to subtract these coins sold.
But obviously you didn't intend the tool for that purpose so my bad.
