Move off your hosted vendor. Keep every subscriber.
Import subscribers and purchase history, run both systems in parallel, and cut over on your schedule — with entitlements intact and zero downtime.
- Zero-downtime cutover
- Dual-write safety net
- Rollback until the final flip
Zero-downtime
Cut over on your schedule, not theirs
Import your subscribers, dual-write through a transition window, verify parity, and flip the switch only when the numbers match — reversible the whole way.
Import
reversibleBulk-import entitlements and purchase history. We replay each app-store transaction into a StoreTransaction, then rebuild every subscription from its lifecycle — nothing is guessed.
Dual-write
reversibleBoth systems run in parallel on every new purchase. Apple's notifications point at CashSDK, which fans out to your backend, so your old path stays warm as the rollback target.
Verify parity
reversibleA nightly comparator diffs old-tier vs CashSDK-tier for every subscriber. The gate to cut over is the real one we used: zero diffs for seven consecutive days.
Cut over
Flip one feature flag. Entitlement truth now comes from CashSDK; no subscriber re-authenticates, no access resets. Reversible until this step completes.
Design partner
We migrated our own first.
BemMeQuer moved from a hosted paywall SDK to CashSDK with zero entitlement regressions — executed agentically through the same CLI and MCP surface every CashSDK customer uses. It's the migration this page is built on.
“The gate to flip was boring on purpose: seven straight days of zero diffs. When the numbers matched, the cutover was one flag.”
The boring part, handled
What comes with you
Downtime, receipts, rollback, and history are the four things teams fear losing in a migration. Each is handled by default.
No downtime
Apple's notifications cut over once, to CashSDK. Your backend keeps receiving them via outbound webhooks — the pipe never goes dark.
Receipt & entitlement re-mapping
Every transaction is replayed into our data model and mapped to the exact tier it grants — plus, supreme, and the rest — verified against your live catalog.
Rollback safety
Every phase before cut-over is reversible. The old path stays flag-enabled and warm; one flag returns you to it.
Historical data import
Purchase history comes with you, so your first CashSDK report already has years of context — not a blank slate.
After cutover — entitlement truth lives in CashSDK, with your history already loaded.
A migration that respects your revenue
Stop paying a percentage for infrastructure
Bring your subscribers with you.
Keep every entitlement, import your history, and stop paying a percentage of revenue for infrastructure. We'll plan the phases and the rollback with you.