📊 Case study: 384 conversions at $1.25 CPA on Telegram Mini Apps An Android app on Google Play, short video ads inside Mini Apps, United States and Germany, October 2026. Flat $3.20 CPM, no automatic optimization: • $481 spend → 21,700 clicks, 14.4% CTR • 384 tracked conversions, $1.25 CPA • conversions came from 34 placements, not one lucky source The interesting part: spend grew tenfold during the month and weekly CPA rose from $0.59 to about $2 — yet click-to-conversion rate held at 1.7–2.0% every week. The users didn’t get worse; CTR fell as the campaign reached more Mini Apps. At a flat CPM, that is what moves your CPA. Full breakdown with weekly numbers → adexium.io/blog