Doubt I'll be the first to link this but basically you can input a collection of either your personal pics or subreddits, eew, and put choose what instruction cards you want, I have mine pretty vanilla, stroke 10 times each slide and follow the instructions, It'd be much nicer if you could put some 4chan /h/ threads with it but meh. Here's my personally customized slideshow.
http://www.jerk-off-instructor.com/sets/play/53474?interval=8
Update - you can use left/right arrow keys to go next/previous and spacebar to pause
so more or less like the Fap Gauntlet threads here
pretty much accept you don't have to scroll down and click each image to expand them, hands free version
>>4132916
that's what the fap gauntlet app does too
Link pls