Free tools
Every tool publishes its formula in full. Outputs that are models rather than measurements are labelled estimates — here and everywhere else on the platform.
Engagement rate calculator
By followers or by reach, with tier bands for orientation.
Influencer rate calculator
A starting-point model with every multiplier shown.
Six more are planned (fake-follower estimator, media kit generator, budget planner, brief generator, growth projector, CPM calculator) — listed here only once they actually work.