Flagship
Subscription Ledger Studio
Map API billing events to journal evidence, with Hong Kong reporting habits in mind.
Course detailsHong Kong · API billing literacy
Subscriptions leave trails. We teach you to read them.
Apiworkflow Digital trains controllers, ops leads, and product finance partners to audit API-metered and SaaS subscriptions against the ledger — without waiting for a vendor portal screenshot.
2,180subscription lines reviewed in labs
73Hong Kong teams coached
4.2average cohort rating
Voices from recent cohorts
Short notes from people who finished Subscription Ledger Studio or sat in Audit Lab office hours.
“The module on webhook idempotency finally explained why our Stripe renewals never matched the accrual schedule. Still wrestling with multi-currency credits, but the worksheet helped.”
“We brought three mystery SaaS vendors into the Audit Lab checklist and closed two of them the same week. The third needs legal — fair warning in the FAQ was accurate.”
Featured learning paths
Browse all courses
Workshop
Usage Drift Clinic
Spot silent plan upgrades and orphaned seats before month-end.
See listing
Lab
Vendor API Evidence Pack
Build an auditor-ready folder from webhooks, invoices, and contract riders.
Visit Audit LabWhat sits under the practice
Three habits we reinforce until they feel ordinary.
Event before narrative
Start from the API payload or CSV export, then write the story — not the other way around.
Dual clocks
Service period and invoice date often disagree. We teach you to document both without apology.
Human-sized tools
Spreadsheets, light scripts, and checklists beat opaque “AI audit” black boxes for this work.
Bring a live vendor into Audit Lab
Optional clinic seats for teams who already know their pain points and want structured review time.