BTC daily and the others every other day
I have the same routine for bitcoin. I can't stop myself from doing that. It became part of my life already and for altcoins, I can easily see it too when I check bitcoin price.
And for alts that I'm not concerned but I have it, occasionally I check them.
In reality, day traders check the Bitcoin price every hour for understanding the market movement. Altcoin trader usually worries regarding the price changes in the ETH and the Binance traders look for the huge price swings in the price of BNB from my understanding.
The Blockfolio and CoinGekgo Android applications send notifications if the market shows strong buy or sell signal. Bear market conditions don't let the prices to discover the new resistance levels which are required for touching the higher price points. These applications are updated in every 10 minutes and there is no need to scroll down the screen page for updating the latest prices in the crypto market.