I switched some of my side projects (simple Rails apps) over to Render on someone's recommendation. Render charges $7 for the lowest tier, which I'm confident is all I'll need probably ever.

While that $7 isn't going to break the bank, these new "Basic" Tiers on Heroku seem way more economical for my silly side projects, if I'm doing my mental math right (and it's quite possible I'm not...)