An anonymous founder has listed their AI study app for sale, and the numbers are public 
It’s built for one very specific customer: medical students in Brazil, in Portuguese.
Students record their lectures and the app turns them into flashcards and practice exams, then remembers what each student got wrong.
There’s no free version, just monthly, quarterly and annual plans.
The listing shows $148K in revenue over 12 months, $116K of it profit 
The listing doesn’t name the app, but every detail matches ArchiMeds, which charges R$125 a month (roughly $23) and pays med students commission to promote it at their schools.
From the listing…
Growth has come mainly from creators, referrals, ambassadors, and word of mouth…
Growth has been funded mainly from operations, not a dedicated market-capture budget.
So mostly students selling to students.
Only about 2,100 of its 110K signups have ever paid, which leaves plenty for a new owner to work on.
The asking price is $250K, and the founder says they’re moving on to a new venture.
Pick one profession with tough exams in one country, build the AI study app for it, and recruit students to sell it on campus 