I'm an iOS developer, and I think $5 is a bit steep to simply try it out. I'm going to build from source and then buy it if I like it, but you may want to cons

I'm an iOS developer, and I think $5 is a bit steep to simply try it out. I'm going to build from source and then buy it if I like it, but you may want to consider making some sort of free version that people could use to evaluate it.