I'm not giving you a hard time about it. At all. But you should be already looking for ways to profit from this. In one month it will hit 100K users, and suddenly you have a huge infrastructure bill. Plus the fact that you can get sued the fuck out due to DMCA, patent trols, and such. Run some tests, charge for it, and see what the apps real world traction is.
Worrying about DMCA, patent trolls, etc, doesn't sound productive for a presumably young person with relatively nothing to lose financially and the operation at least under the umbrella of a proper corporation or LLC. Get the money rolling in, segregate it from your personal finances, pay yourself a salary and pay your taxes. Listen to feedback, keep innovating and hope for the best. Don't be paralyzed by what are at this point, made-up fears of the worst.
I'll figure something out, I work full time so I can manage the costs without noticing but that isn't an answer so much as a deflection :)