Gain intuition for the dynamics of a subscription based business.
A calculator for comparing different revenue models. You can set the parameters for each model and see a project of the first 12 months of revenue.
Conversion rate is the proportion of users that purchase a product. Avg. Price is the average dollar value of a purchase or renewal. Churn rate is the proportion of subscribed users that cancel their subscriptions every month. You can scale the estimated number of daily downloads as well.
You can check out this blog post for an explanation of the formula behind the model.
A non-recurring revenue model is the same as a recurring model where everyone unsubscribes every month.
These projections are only as accurate as the input parameters. I would hesitate to use it for anything other than broad stroke exploration.