There is already a stats page made by a community member where u can check the profits later. My experience in the last 8 years are that i can only calculate my profit when i do mining. Not any calculator is correct (all about ur speed in compare with ur powercosts and the every seconds changing difficulty from all coins, also in this calculate u must have a future price (nobody knows a future price) and the price from now), so i just check my profits during mining..