i first read this on twitter, haven't tried it myself yet. growth hack story - Nadia zueva runs a small ai stylist app with no real budget for creative testing, so she pulls apart cpa before spending anything. her chain: cpm × link ctr × post-click conversion = cpa. fixing cpa always means finding the broken link. the benchmarks she uses, heavily averaged: hook rate (survived first 3 seconds): ~25% normal, 30%+ good, scale at 35%+ hold rate: 15-25% on cold traffic is fine. high hook + low hold means the hook promised something the body didn't deliver link ctr: ~1% normal, 1.5-2% good the point is that cpm, hook rate and hold rate are all attention metrics, and attention can be tested organically for free. so she posts 3-5 hook variants as normal organic posts on tiktok, reels and shorts through postiz, waits 48-72 hours, and reads the retention curves in tiktok studio. only variants in the top ~20% on at least two of watch-through, saves/shares and profile visits get money, through spark ads on tiktok or meta ads manager. then paid only has to prove ctr and cpa. her takeaway: ads manager should be testing intent, not discovering that nobody watches past second 2. comments on pre-testing creatives organically before running them?   submitted by   /u/sparesername   to   r/PPC [link]   [comments]