Fair nuff.They do have ammonia. They have ammonia, nitrite, nitrate, gh, and kh. But yeah they were pretty cheap. It's all I could afford at the time but I didn't have to want to always keep driving to the fish store to get it tested so I just bought them. I'm going to get a more expensive and better kit next time I make it out to the fish store.
Whenever I've checked online, the API has pH but not NH3.
I would personally recommend you get the Salifert test, they are sold individually, and the three main ones NH3, NO2, NO3 will set you back probs around $25-30 all told.
Many people on here recommend the API Master test kit, which is decent enough, you just need to be careful with the NH3 test to view it under natural light, as artificial can often make a 0ppm result look like a 0.25ppm result.