Just to know: delta or blackfolio show the price from a specific, chosen exchange or from coinmarketcap?
The app shows you the price of the exchange you have chosen. I find it very convenient because you can then choose the exchange where you buy or sell your coins.
This is much closer to "reality" than CMC, because you do not buy or sell at CMC, but at your exchange.
i know what you mean

right now i still can control my self and not check the price too often, but maybe in the future i will do the samething that you do
That's good. I advise you, as soon as you realize that you waste too much time with it, I would delete the app.
Otherwise sometimes you sit for hours on the phone without realizing it.
From time to time you can check the exchange page to find out how high the price is.