Yup, AquaSafe is pretty much the same thing. I personally prefer Prime but they'll both get the job done!
Hmm. I'm asking because some of those products work and some don't. I wonder if that ones contains live bacteria. The ones that do are usually pretty effective. If you see one called Tetra SmartStart (or something like that), it's considered one of the best. It used to be called BioSpira.
I think you're assuming that live foods are going to be more expensive but that's not the case at all. It's actually cheaper in the long run if you can breed your own live food
. Believe me, I know how it is, I'm a college student too
. I breed ghost shrimp, minnows, and crickets. It really does save me money. I buy bloodworms and brine shrimp, though.
If you're looking for other ways to offer the food, try a turkey baster. You can make the food "move" towards the frog that way.
Don't assume that your frog has a disease. That's a mistake that a lot of new aquarium owners make (and it leads to other issues like improperly medicating animals or over-using antibiotics). There might be a much simpler explanation for your frog's behavior--your water parameters. Get the actual numbers. If I had to guess, I'd say that because you have such a tiny tank (and with a poor filter) that wasn't cycled, you're experienced ammonia and/or nitrite spikes (possibly along with pH changes). The spikes are stressing your frog out and causing the symptoms you're describing. That may also explain why she doesn't want to eat.
So I would do daily water changes with treated tap water and get your water tested. By the way, how are you doing water changes? Make sure that you're only doing partial changes with a gravel vac, don't change all of the water. Oh, and if you can, pick up some hardy live plants (like java ferns). They'll help stabilize your tank