Name the clock
Install, first open, trial start, and first paid receipt are different clocks. Mixing them inflates LTV and hides where users stall. Every Apieventstack exercise begins by writing the clock in plain language.
Bangkok studio · Cohort 31 opening
Count the money your freemium app actually keeps.
Apieventstack is a small school for product, growth, and finance partners who ship trials, paywalls, and in-app purchases. We teach the event layer under revenue — not another dashboard tour.
37cohorts since 2019, mostly remote with Bangkok office hours
2,140product people who finished at least one full course
8.4haverage instrumentation homework per flagship seat
61Thai and SEA studios still in the alumni channel
Flagship
Signal Pipeline Fundamentals
Six weeks on event contracts: trial clocks, restore purchases, refunds, tax, and the difference between a “purchase” click and a receipt finance will file. You leave with a written taxonomy and a dashboard spec your PM and controller can both read.
See modules and limitsFrom recent seats
What people actually changed after class
“We stopped summing the purchase event and started summing net receipts. ARPPU dropped 11% on paper and the board finally stopped asking why cash lagged the dashboard.”
“The paywall timing module made us delay the hard wall by 36 hours. Conversion rose, but only after we fixed restore-purchase identity — without that, the test was noise.”
★★★★☆“Dense. I wanted more ad-mediation material than they offer. Still the only course that made our refund event match App Store Connect.”
What we actually teach
Three habits that keep freemium numbers honest
Separate intent from cash
A tap on “Continue” is not revenue. We map client events to store receipts, refunds, grace periods, and tax so product and finance stop arguing over screenshots.
Publish a contract
Dashboards rot when definitions live in someone’s head. Students leave with a one-page event contract: owner, grain, allowed filters, and what the number is not allowed to mean.
Catalogue
Shorter labs around the flagship
Each lab assumes you already ship a freemium or hybrid app. None of them are generic “intro to analytics.”
Two weeks
Paywall Timing Lab
When to show the wall, how to log impressions without double-counting, and why day-zero walls poison every later experiment.
All programmes
Three weeks
Cohort LTV Workshop
Build LTV from first receipt, not from install. Includes a worked example from a casual puzzle title with seasonal spikes.
All programmes
Ten days
Receipt Reconciliation
Match store files to your warehouse. Tax-inclusive vs exclusive, family sharing, and the refunds that arrive a month late.
All programmesDesk notes
Writing from the studio
Essay
Event taxonomy that survives growth
Impression rate is a terrible north star. Name the states before you move the wall, or growth will invent new names every quarter.
Min Buri · Bangkok
Bring a messy event map. Leave with a contract.
Seats are informational on the site. If you want a place in the next flagship or a private studio workshop, write to the desk.
Enquire about a seat