Okkes Çetinkaya
Solo fintech founder, 6-month audit cycle — first published Madar case study with full numbers and founder consent.
Read the audit →Real teams shipping MENA-native growth. The first cohort is going live with consent through Q3 2026 — placeholders show what's coming.
Solo fintech founder, 6-month audit cycle — first published Madar case study with full numbers and founder consent.
Read the audit →Ramadan engagement +213%, post-Ramadan retention strategy lifted Q3 ARPU by 41%. Story publishing once founder reviews draft.
Story coming soonMulti-app org switcher rolled out across 4 portfolio apps. Attribution reconciliation closed a 22% revenue gap.
Story coming soonBack-to-school cohort modeling shifted spend off Meta into TikTok and dropped CAC by 31%.
Story coming soonIyzico + IAP reconciliation surfaced 18% of revenue invisible to AppsFlyer. Cohort retention now tracked end-to-end.
Story coming soonBayesian sequential testing on App Store experiments cut average decision time from 14 days to 4.
Story coming soonEvery Tuesday we ship one growth teardown — a real MENA subscription app, the data, and the lever that fixed it. Built for founders. No fluff.