Made a med school entrance exam prep platform with my brother last year (www.bmat.ninja) - $12k profit last year, $27k this year. Once the website was setup, m

Made a med school entrance exam prep platform with my brother last year (www.bmat.ninja) - $12k profit last year, $27k this year. Once the website was setup, maintenance workload was pretty minimal (the occasional BugSnag report), so I guess that counts as passive.