Most mobile analytics tools give you more features. True. But they also ask you to trust closed code and opaque infrastructure. Fantasma takes a narrower approach: it's open source, install-scoped, and built around the few reports most people actually look at. The SDK does not track users and does not let you attach arbitrary user attributes to a session. Each install gets a random identifier. That is enough to understand how an app is doing without collecting more than you need.