How these tools work
RealGrowthMetrics tools are designed to answer real operational questions - not generate optimistic fantasy charts.
What these calculators are
These tools simulate how subscription and membership businesses behave under real-world constraints.
You control the same levers you control in real life: acquisition, churn, pricing, and time.
The goal is not to impress you. The goal is to show you what actually happens when those inputs collide.
What these calculators are not
These are not “growth hacks.” They do not assume viral loops, infinite markets, or perfect execution.
They also do not try to capture your email address or lock results behind forms.
You get the math immediately - because that’s the point.
The assumptions behind the math
- Growth is modeled as a fixed number of new members added each month.
- Churn is applied monthly as a percentage of the active member base.
- Revenue is calculated as active members × price per month.
- No external “magic” is introduced to make charts look better.
What the results mean
These tools don’t predict the future. They show you the direction your current assumptions point.
If the results look disappointing, that’s not a failure of the calculator - that’s useful signal.