Teen tech whiz Zach Yadegari is giving us a major update on his life after he sold his calorie-counting app a year after we first learned about it … and he’s now considering his options after half a year in college.

Zach stopped by “TMZ Live” Tuesday and spilled a few details about the multimillion-dollar deal selling the company he started at age 16 … now 19, he’s taking a “gap semester” after half his freshman year at the University of Miami … one of the few schools that accepted him somehow, with his multimillion-dollar brain!

You might remember … he told us last year he got rejected from most of the Ivies — and now he admits his time at Miami could be wrapping up early … after taking a cue from Steve Jobs and taking classes on just whatever he’s found interesting. Watch the full clip for more on how that experiment’s gone so far.