I've made a free tool to help subscription stores understand churn. The idea came from hearing a friend talk about how counterintuitive it can be. The tool shows the huge effect small changes in churn can have on revenue and growth.
It's fun to play about with the numbers and see the effects small changes might have for your business.
It's bare bones right now but I'm hoping to add a few more features.
Any ideas or feedback are always welcome!