Every time you build a subscription product, you wire auth and payment together from scratch.
Two systems, manually reconciled, with the same edge cases left hanging every time. RegKit implements the correct pattern out of the box — one form, payment confirmed first, account created only on verified payment.
No ordering problem. No reconciliation. No missed webhooks.
Covers the full auth flow — registration, login, and password reset — with payment correctly integrated from day one.
$199 after launch · one tier · all stacks included
Auth and payment are usually treated as separate systems. Some teams start with auth, others with payment. Either way, the two have to be reconciled correctly: account creation, payment confirmation, and edge cases all aligned. That’s where things usually go wrong.
Every step documented, every security decision justified. The implementation you'd write yourself if you had the time — and then never want to write again.
Email, password, and card collected on a single screen. Stripe Elements renders the card field in a secure iframe — card data never touches your server and PCI compliance is Stripe's problem, not yours.
Card goes directly from browser to Stripe. Your backend is not in the loop for card data. On success, Stripe returns a PaymentIntent confirmation.
The client sends email, password, and the PaymentIntent ID to your registration endpoint. The card is never in this payload.
Your server calls Stripe's API directly to confirm the PaymentIntent succeeded. This step cannot be skipped — a malicious client could send a fake payment confirmation without it.
⚠ non-negotiable — never skip server-side verificationbcrypt hash, account record, session token — in that order. Plaintext never persists. User is authenticated immediately, no additional login step.
✓ user lands in the productBrowser closed mid-flow, network drop, any edge case — the Stripe payment_intent.succeeded webhook catches it. Idempotency keys ensure the account is created exactly once regardless of which path fires first.
The scenarios that only surface after launch — each one covered, tested, and documented.
PendingRegistration pattern handles it.
payment_failed arriving after succeeded is a safe no-op — never incorrectly deletes an active account.
webhook_events prevents any handler running twice.
processing not succeeded. Account creation deferred until webhook confirms — no extra logic.
One purchase covers all three stacks. Switch freely as your projects change — no extra cost, no restrictions.
Security, reliability, and edge cases — handled correctly from the start so you don't have to revisit them.
The client is never trusted. Every payment confirmation is verified directly with Stripe on your backend before any account is created. The attack vector is closed by design.
Inline flow handles the happy path. The webhook catches closed browsers, network timeouts, anything else that drops. Both paths create the account exactly once.
Idempotency keys on every Stripe request. Webhook signature verification on every incoming event. Safe to retry anything without duplicate charges or accounts.
Klarna, ACH, BACS — all handled correctly. Deferred account creation means async methods work identically to card payments with no extra logic.
Declined cards, expired sessions, failed payments — each returns something actionable. No silent failures, no dead ends, no confusing redirects.
Passwords hashed with bcrypt before account creation. Plaintext never persists anywhere in the flow. Session issued immediately on confirmed payment.
All stacks included. Unlimited projects. Early access pricing until 31 October 2026.
Updates renew at $49/year after year one — optional,
keep everything if you don't.
Webhook fallback, idempotency, bcrypt, server-side verification — all handled across 3 stacks.
Hours to drop in, not days to build and a week to find what you missed.
$199 after launch · one tier · all stacks included
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