{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Price Power","title":"15: How to start with Signal Engineering w/ Shumel Lais","html":"","width":"100%","height":180,"duration":3270,"description":"Shumel Lais, co-founder of Day30 and previously founded Appsumer (acquired by InMobi), explains why most subscription apps feed ad platforms the wrong goal, how precision and recall reshape signal selection, and what a realistic measurement maturity ladder looks like in 2026.Shumel walks Jacob through the five stages of measurement maturity, from apps that just compare App Store Connect revenue to ad spend, through MMP attribution and cohorted reporting, up to incrementality testing for the largest spenders. He breaks down why signal engineering only makes sense once you have the right foundation in place, shares the 10-conversions-per-campaign-per-day rule of thumb for when to go further down funnel, and unpacks the restaurant booking app mistake that first put him onto the precision/recall framework.What you'll learn:Why optimizing to cost-per-trial leaves money on the table for most subscription appsHow Meta's 7-day visibility window forces the signal engineering problemWhy recall, not precision, is the metric most marketers overlookWhy the restaurant booking app example was Shumel's own mistake, and what it taught himHow Meta's event-day reporting can hide renewals inside new purchase countsWhy server-side events struggle more with matching than client-side eventsHow to decide between revenue-value signals and binary convert/no-convert signalsWhy subscription apps are years behind gaming on analytics maturityThe 10 conversions per campaign per day floor before attempting signal engineeringWhen LTV curves become reliable enough to extend payback from 30 days to 6+ monthsKey Takeaways:Signal engineering is closing the gap between what the platform can see and what you actually care about. Meta sees 7 days. You care about month 3 revenue.Recall is the metric most teams forget to measure. Precision tells you if the users firing your signal convert. Recall tells you what share of your actual converters it captures. A signal with 90% precision and 40% recall tells...","thumbnail_url":"https://img.transistorcdn.com/zQmNoGN5MuGeMOqTvMb2DuPbwhjQUVEJ-q54eTGsg0c/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS8zMDkx/MTljNmYxN2FkNGFm/NDIwOWMyNzU0MmQ1/M2ZjZC5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}