Free tools for media buyers

Calculators, builders and checkers for the parts of a campaign that break quietly: macros, click IDs, postbacks, unit economics and PWA installs.

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Tracking and attribution

URL parameters builder Facebook, TikTok and Google Ads macros mapped to UTM or tracker sub parameters, ready to paste into the ad.
Tracking link checker Paste a link to see its click IDs and sub parameters, and catch unresolved macros, duplicates and parameters lost after #.
Postback URL builder and S2S tester Assemble a server-to-server callback with click ID, status and payout, and get a safe curl command to test it.

Unit economics

ROAS and ROI calculator Profit, ROI and ROAS with approval rate, plus the approval, payout and CPC at which the campaign breaks even.

PWA

PWA manifest generator and validator Generate manifest.webmanifest and check it against Chrome's install requirements, including the rich install dialog.