Free tools

Five calculators, no email wall.

Everything runs in your browser. Nothing you type is sent anywhere, there is no signup, and no result is held back until you hand over an address. Each of these is a number Ripples works out automatically once your billing provider and your Google Ads account are connected, which is the honest reason they are on this site.

No signup No email Runs in your browser

The tools

Pick the number you are missing.

UTM builder UTM builder Build tagged campaign URLs that will not break your reporting. Presets for Reddit, Google Ads, newsletters and the rest. Open the tool CAC payback CAC payback period calculator How many months until a channel has returned what it cost, once churn is taken into account. The number ROAS does not give you. Open the tool LTV:CAC LTV:CAC ratio calculator Lifetime value against acquisition cost, with the ratio read out in plain language instead of left as a number. Open the tool ROAS ROAS calculator Return on ad spend, break-even ROAS from your gross margin, and cost per acquisition. Three numbers, one form. Open the tool Retention curve Retention curve calculator Paste your cohort counts, get the curve, and find out whether it flattens or keeps falling. No other free tool does this. Open the tool

Or stop typing numbers into forms.

Connect Stripe and Google Ads once and these work themselves out. Free until $1K MRR.