Tools
The numbers before the proposal
Calculators and diagnostics I use in real work. No signup, no email, no data collection: the result comes first and complete. Several will tell you not to hire the service — when the honest answer is that your volume does not support it, that is the result.
How they are built
The result comes first
There is no email wall. None asks for anything before giving you the number and none sends anything to any server: everything runs in your browser. That is a commercial decision, not a concession.
No invented data
When a number depends on a rate that changes — Meta, WhatsApp, exchange rate — it is an editable field with its reference date, not a constant hidden in the code.
Every calculation is auditable
Each tool shows its formula and where its thresholds come from. It also states what it does not do: the A/B testing one declares that it does not correct for multiple comparisons.
Several argue against the sale
The A/B testing one tells most sites not to hire CRO. The ad budget one says no agency can optimize with that budget. An informed prospect verifies these things, and I would rather they read it here.
Did you get a number you did not expect?
Send it over. I will tell you what I would do with that case in the first 30 days, with nothing to hire.