All Birdworks software, apps, and games track anonymous usage data that I use to help me decide what needs improving, updating, or fixing. Unlike the vast majority of software, I use no third-party analytics collectors; everything is done internally and runs on entirely private-to-Birdworks software and servers.
Broadly speaking I try to collect no identifying information, and all data is aggregated into totally anonymous charts like this:
If you have questions, complaints, or want to see how that data is aggregated and used, email me at privacy@birdworks.io and I'll do my best to answer your question. I'm sort of an obsessive privacy nut myself, so I totally get where you're coming from.