Everything Keylight does to turn a payment into a signed license your app can trust.
Nine features that work together — signed leases, the payment provider of your choice, native Stripe checkout, device activations, trials, usage analytics, a per-customer record, a self-serve portal, and refund revocation. Click any one to dig in.
Works with
Signed license keys for your app
Every Keylight license is an Ed25519-signed lease your app verifies locally — issued automatically when Stripe takes a payment.
Learn more about license keys →Minted on payment
A Stripe payment automatically issues a signed key — no webhook glue to maintain.
Verified offline
Your app ships with the public key and verifies licenses locally, with no runtime server call.
Revocable
Refunds and chargebacks mark the key revoked; the next revalidation rejects it.
Device activation limits
Each key carries an activation cap; activations are tracked per device.
Bring any payment provider
Keylight sits between your checkout and your app. Connect the provider you already use — or several at once — and switch anytime without shipping a new build.
Learn more about payment providers →Payment-agnostic
Stripe, Paddle, Lemon Squeezy, Gumroad, and Polar all mint the same signed license.
Switch without a rebuild
Change providers, or run several in parallel. Your keys, devices, and customers stay exactly where they are.
Stripe runs native
Connect your Stripe account and a completed payment issues a license in seconds — no webhook handler to write.
Everything else rides in
Paddle, Gumroad, and the rest issue licenses over their own webhooks or a one-time import of your existing customers.
Native Stripe integration
Connect your existing Stripe account once. A completed payment mints a signed license automatically — no webhook handler to write or host.
Learn more about Stripe →Bring your own Stripe
Keylight connects to your existing Stripe account — you keep the customer data and the standard rate.
Automatic issuance
checkout.session.completed mints and delivers a signed license within seconds.
Idempotent by design
Stripe webhook retries never produce duplicate licenses for one purchase.
Lifecycle in sync
Refunds and subscription changes update license state automatically.
Per-device activation limits
Every Keylight license carries an activation cap. Devices are tracked by a hashed fingerprint, and customers manage their own machines.
Learn more about device activations →Activation limit per tier
Each license tier sets how many devices a key may run on — 2, 5, or unlimited, your call.
Hashed device fingerprint
Devices are recognised by an opaque hashed identifier, never by raw hardware data.
Idempotent activation
Relaunching or reinstalling on a known device never consumes an extra slot.
Self-service deactivation
Customers free a slot by removing an old device in the portal — no support ticket.
Free trials and free tier, owned by the dashboard
Set the trial length and the free tier once. Every install picks the new values up on its next launch. No release, no trial server, no trial keys.
Dashboard-owned trial length
Pick 14 days, 7 days, or 0 from a dropdown. Every SDK reads it at launch and runs the countdown on the device.
Free tier switch
Decide what a lapsed or never-paid customer keeps. Flip it from the dashboard, not from a rebuild.
No trial backend
The trial runs on the device with no payment, no trial server, and no trial-only keys to swap out later.
Clean conversion
A payment lands, the key is issued, and the state flips from trial to licensed on the next check.
See what your licenses actually do
Stripe shows you revenue. It says nothing about whether licenses activate, keep validating, or quietly stop. Keylight measures the part after the payment.
Activations and validations
Every activation and every offline check, counted per day — so you can see adoption and drop-off, not just sales.
Active devices and MAU
How many devices are live right now and how many were active this month, across all your products.
Version and platform split
Break usage down by app version and by platform, so you know who's on the old build before you deprecate it.
No analytics SDK to wire
The signal rides the license activation and validation calls your app already makes. Nothing extra to instrument.
A self-service customer portal
Customers retrieve their key, manage their own devices, handle billing, and upgrade — under your brand, with nothing for you to build or host.
Learn more about the customer portal →Key retrieval
A customer who lost their key gets it back themselves — no email to you.
Device management
Customers see their activated devices and free a seat by removing an old one.
Billing & upgrades
Self-serve subscription management through Stripe, plus one-click tier upgrades.
Hosted & white-label
Provided and maintained by Keylight, running under your brand.
Automatic revocation on refund
When Stripe refunds a payment, Keylight marks the license revoked — no manual step, no webhook handler, no orphaned active keys.
Learn more about refund revocation →Refund-triggered
A Stripe charge.refunded event marks the matching license revoked automatically.
Chargeback handling
Disputed charges revoke the key as soon as the dispute is filed.
Signed revoked flag
The revoked state is part of the signed lease — the app trusts it without a database lookup.
Propagates on revalidation
The app picks up revocation on its next periodic online re-check.
Every customer, one record
Pick a customer and see the whole picture: every license they hold, every device those keys are running on, every payment they've made, and what they're worth over their lifetime — on one page, not five.
Learn more about customer records →Licenses in one list
Every key linked to the customer, with product, status, and how many of its device slots are in use — one click through to the full license.
Active devices
A live count of the machines running this customer's keys, so you can see who's near their seat limit before they email you.
Payments and lifetime revenue
Their payment history and what they've paid you in total — assembled from your payment provider, not a spreadsheet you keep by hand.
Keyed by email
Records are matched on the customer's email, so a person who bought twice — even through two providers — is one customer, not two rows.
How the features fit together
Nine features, one loop. Payment in, signed license out, devices tracked, usage measured, every customer on record, revocation handled, trial enforced.
Payment
Stripe charges your customer. Trials can lead in.
Lease
Keylight mints an Ed25519-signed license, sent to your customer and your app.
Activation
The app activates each device; usage is counted and capped per key.
Lifecycle
Refund? Key revoked automatically. Customer needs help? Self-service portal.
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