The forecast shape · free, no signup
Move the levers.
Watch the call change.
This is one of the 11 shapes an answer can come back as. A forecast is not a paragraph about growth — it is a number with its assumptions attached and its downside next to it. Drag anything. The arithmetic is real and it runs in your browser.
Free to start. No card.
- Real math — no model call
- Nothing typed here leaves the page
- Drag anything and the URL keeps up
The CFOForecastWhere is MRR in 12 months?
the bracket is churn: downside re-runs the same math at +3 pts, upside at −2 — over twelve months no other lever compounds like it
what one step buys — from these levers
+2 customers +$901/mo
churn −1 pt +$288/mo
price +$10 +$1,103/mo
The address bar tracks every lever. Share it and it reopens here.
Stated out loud
Small enough
to disagree with.
A toy model, stated out loud.
A calculator that hides its formula is a magic trick. Here is the whole thing — small enough to disagree with, which is the only reason to trust a number at all.
- The recurrence. Start with an empty book. Each month, keep (1 − churn) of it and add the new customers. Run that twelve times, multiply by price. That is the whole model.
- Downside and upside. Same arithmetic, churn moved by +3 and −2 points. Churn is the lever with the most convexity over twelve months, so it is the one worth bracketing.
- What it ignores. Expansion revenue, seasonality, ramp time, discounting, annual prepay, and the fact that raising price usually moves churn. A real forecast has to name those.
- Where it runs. In your browser. No account, no server call, no model. Nothing you type here is sent anywhere or stored.
What a real one adds.
Inside SynthBoard the same shape is authored by a named expert from a bench of 24, and it carries the three things this page cannot:
- Your numbers, not sliders. It reads what you have already told your Chief of Staff — price, churn, runway — and says where each figure came from and when you last confirmed it.
- The assumption it is least sure about. A forecast that will not name its weakest input is a guess wearing a chart. Every assumption comes back as a labelled input carrying its own number — marked as your figure or the expert’s estimate — and each one declares how far the answer moves when you change it.
- What would change the call. The specific observation that should make you redo it — so the number has an expiry date instead of a vibe.
Ask your own question free and your Chief of Staff brings in whoever should answer it — or read how we hold your data before you tell it anything.
