Maybe it's a small thing but every time I add a buy or sell to any coin on my tracker, I then have to do the opposite to my USDT so my chart represents my overall holding. This frustrates the life out of me as surely when you sell a coin, whatever you get for it should be automatically added to the portfolio!!
Am I overlooking some functionality or is there another portfolio tracker that performs better?
Don't know how this coinmarketcap tracker works. But back of the days 2017-2018 I used delta apps which was much more popular at that time. You can try it if it's still providing its services.
Is this portfolio tracker needed to do trading? I used it but did not take it too seriously. what I did, just add some coins and check the total sum every day to satisfy myself