The extensions you use every day run on crxpay.

Recovered lost MRR with dunning + win-back. A 2-person reading extension cut involuntary churn by more than half without adding a retention engineer.

Ran 12 paywall experiments in a quarter. Their team swapped layouts, pricing, and copy weekly without shipping a Chrome update — the A/B engine picked the winners.

Left ExtPay in an afternoon. The compat layer kept every user signed in while the team unlocked entitlements, paywall targeting, and a 2.5% fee.

Scaled to millions of checks without tripping Chrome MV3. Offline-signed cache means entitlement reads are local and cost nothing — even on flaky networks.

Shipped personalized paywalls for every tab. Targeting rules pick the right offer based on tenure and engagement — all without a release train.

Launched a paid tier in under a week. Their team skipped months of subscription plumbing and shipped trials, proration, and invoicing on day five.

Never served a wrong-plan UI again. The XState machine makes invalid subscription states unreachable — catastrophic over-serving dropped to zero.

Turned a free extension into a real business. crxpay’s paywall templates, analytics, and Stripe Connect integration did the heavy lifting.

Killed "my subscription disappeared" tickets. HMAC-signed local cache means users keep their Pro status — even offline, even after a browser crash.

Turned a weekend project into $4k MRR. A solo developer shipped a Pro tier with trials, coupons, and license keys in a long weekend — no backend required.