letustype
Letustype shows you exactly which words, letters, and patterns are slowing you down, so every practice session actually makes you faster.
Everything you need to ship
Authentication
Email + Google OAuth, verification, password reset, JWT staleness checks.
Payments
Stripe Checkout with webhook idempotency, refund handling, subscription extension logic.
Resend with shared layout, dev-recipient redirection, atomic welcome dedupe.
Rate limiting
Upstash Redis sliding-window across 7 named buckets, fails open on outage.
Polish
Loading skeletons, error boundaries, toast wiring, OG image, sitemap, robots.
Analytics
GA4 + Microsoft Clarity, gated to production-only so previews never pollute data.