Small, sharp calculators and checkers we use in real client work — free, no email wall, no sign-up. Bookmark this shelf; it grows every Saturday.
Enter your price, margins and costs — get the exact ROAS where your ads stop losing money and start making it. The one number every budget decision should answer to.
Start from your revenue goal and work backwards — required spend, target CPA, and how to split budget across prospecting and retargeting.
For subscription businesses: what a subscriber is actually worth over 6 and 12 months, and what that means you can afford to pay to acquire one.
Paste your ad's frequency and CTR trend — get a plain verdict on whether the creative is tired and it's time to rotate, or you're killing a winner too early.
Want a tool that doesn't exist yet? Tell us what you're trying to figure out — if it's a good one, we'll build it and ship it on a Saturday.
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