I love the app and try to switch from the well known competitor app but one thing trouble me. It's kinda hard to manually track coin that we have out of exchange, like it should be, in private hot wallet, paper cold wallet and hardware wallet. I'm force to associate each holding to an exchange and to a traiding pair. In addition when a coin is missing on an exchange (like BCH is missing Bitstamp in exchange list), I'm force to choose another exchange to track the coin. There should be manual "private" wallet as an option before the exchange list and this would no be tightened to another coin or currency. Then to tell the app we used coin (to buy stuff) or we sell them on an exchange, we might just deduce to the total with an equivalent in our reference currency (from settings) or transfert them to an exchange "account" to be able to trade them for other coin that would be track in the app also. Not sure if it's clear but it seams the best way to do.