I always prefer real clocks as I'm a big fan of chess and all the chess equipment and I told my friends who are around C, B class players to get a clock on which they asked me, why? Why should I spend money on a clock if everything I can get on my app for free .
I need some strong points or compromise why they need to spend money and actually buy a chess clock
People often use an app clock instead of real analog or digital clock.
So my question is what are the main advantages with a real clock over an app clock, why should someone buy a clock and spend money instead of just downloading a free app?