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41510.io

An independent performance marketing and product studio in the San Francisco Bay Area, founded by Scott Kaplan, a performance marketer who builds. We make go-to-market software that tells marketers what to do next, and shows the math.

Work

Open source · Built on Jev by TypeSafe

Attribute Finder

Finds which parts of your marketing copy drive performance. Jev labels the judgment calls, code counts the rest, and the stats say what actually correlates. Then it writes new copy from the winners, with controls, so you can prove it. In a 30-ad benchmark Jev was 15x to 135x cheaper and 3x to 8x faster than Claude at equal or better accuracy.

Open source · Free web tool

Correlation Checker

Do two of your marketing metrics move together? Platform conversions vs CRM MQLs, LLM mentions vs direct traffic. Pearson and Spearman for every pair, a lag option, and warnings for small samples and outlier weeks. Runs in the browser, nothing to install.

Product

Redavio

Cross-platform budget optimization for Google Ads and Microsoft Advertising. Connects live accounts, recommends budget changes, and applies them when you approve. Works in the web app, Slack, and Claude.

Contact

Custom work too. If you have a performance marketing system or tool you want built, tell us what it is.