Quick answer: Kestrel API Manager for WooCommerce (its WooCommerce.com listing still lives at the woocommerce-api-manager URL) and License Manager for WooCommerce Pro (LMFWC Pro) both turn WooCommerce products into licensed software with keys, activation limits, a REST API and update delivery. Choose Kestrel API Manager if you need renewal reminder emails, account-level master keys, prorated upgrades or built-in Amazon S3 delivery. Choose LMFWC Pro if you want custom key generators, an activation API that ships no secret, AppSumo handling, seven license webhooks, rate limiting and a lower entry price ($129.99/year vs from $199/year).
Disclosure: we make License Manager for WooCommerce Pro. Kestrel API Manager details come from its pages on kestrelwp.com and woocommerce.com, checked on 28 October 2026. Prices and features change, so confirm on the vendor site before you buy.
License keys, activations and updates from your own WooCommerce store
Keys are created on the order, customers activate through a public-key API, and the update server only serves valid, unexpired licenses.
View PricingLive DemoWhat is Kestrel API Manager for WooCommerce?
Kestrel API Manager is a WooCommerce extension sold on WooCommerce.com and kestrelwp.com. It issues license keys (it calls them API keys) when a product is bought, and controls access through its REST API. On the day we checked, the marketplace listing showed version 3.8.1, 700+ active installs and a 4.4-star rating from 7 reviews. The price starts at $199 per year with a 30-day money-back guarantee.
Its strengths are clear on the listing: account-level keys (one key per customer for all purchases) or product-level keys, renewal reminder emails 30, 7 and 1 day before expiry, prorated upgrades and downgrades with WooCommerce Subscriptions or Constellation, secure expiring downloads from your server, Amazon S3 or a remote URL, a drop-in PHP SDK for WordPress plugins and themes, and a built-in migration tool from WooCommerce Software Add-On.
What is License Manager for WooCommerce Pro?
License Manager for WooCommerce Pro is a WordPress plugin that generates or imports license keys, delivers them on WooCommerce orders, and lets your software activate, validate and deactivate those keys over a REST API. Keys are encrypted at rest. If you are new to the concept, start with what WooCommerce license keys are and how order license keys are generated.
Its focus is the seller who wants control over key formats, a public activation API that doesn’t expose admin credentials, update gating tied to license status, and integrations such as AppSumo and webhooks.
Kestrel API Manager vs LMFWC Pro: side-by-side
| Feature | Kestrel API Manager | LMFWC Pro |
|---|---|---|
| Price (checked 28 Oct 2026) | From $199/year, 30-day money-back | $129.99 (1 site), $199.99 (3 sites), $249.99 (15 sites) per year, 14-day money-back |
| Key style | Account-level master key or per-product keys | Per-order keys from generators (prefix, suffix, chunks, character map) or imported key stock |
| Activation limits | Yes, per key | Yes, per key; per-domain activations for WordPress via the public API |
| Activation API secret | Uses its API and PHP SDK (see vendor docs) | Public v1 API needs public key + application ID + license key; no admin secret ships |
| Plugin/theme updates | One-click updates via PHP SDK | Update server refuses expired or non-Active keys |
| File storage | Local, Amazon S3 or remote URL built in | Local storage built in; other storage needs a code adapter |
| Renewal reminder emails | Yes, 30/7/1 days | No |
| Prorated upgrades/downgrades | Yes, with Subscriptions or Constellation | No built-in proration |
| Subscriptions | WooCommerce Subscriptions, Constellation | WooCommerce Subscriptions: extend key or issue new key per renewal |
| Refunds and cancellations | Keys can be blocked or revoked | Configurable Terminated status applied automatically |
| AppSumo | Not listed | Webhook + OAuth, tier-to-activation mapping |
| Webhooks | Not listed | 7 license and activation events (unsigned, no retries) |
| API protection | SmartCache, debug logs | Rate limiting, IP blocking, per-route toggles, API logs |
| Migration | Built-in Software Add-On importer; help for EDD, Freemius | CSV/TXT import of keys |
Where Kestrel API Manager is stronger
A fair comparison has to say this plainly. Kestrel API Manager has features LMFWC Pro does not:
- Renewal reminders. It emails customers 30, 7 and 1 day before a license expires. LMFWC Pro has no reminder emails; you would use a separate email or subscriptions tool.
- Prorated upgrades and downgrades. With WooCommerce Subscriptions or Constellation, customers can move to a bigger tier and pay the difference.
- Account-level master keys. One key per customer that unlocks every eligible purchase. LMFWC Pro issues keys per order item.
- Built-in S3 and remote delivery. LMFWC Pro ships with local release storage; S3 is possible only by writing a storage adapter.
- Migration tooling. A built-in importer for WooCommerce Software Add-On that also answers legacy API calls, plus migration help from EDD and Freemius.
- Longer refund window. 30 days vs 14 days.
If renewal emails and proration are central to how you sell, those are real reasons to pick Kestrel.
Where LMFWC Pro is stronger
Key generators and imported stock
Generators let you set the character map, number of chunks, chunk length, separator, prefix, suffix, validity in days and maximum activations. You can also import keys from CSV or TXT and sell them as stock, with WooCommerce stock synced to the key pool. A tool generates keys for past orders if you add licensing to an existing store.
An activation API with no secret in your code
The public v1 endpoints (activate, deactivate, reactivate, validate) take a public key, application ID, license key and domain. Your plugin or app never carries admin consumer keys. Each activation stores a token, label, IP and user agent, and for WordPress plugins it also records the plugin, WordPress, PHP and SDK versions, so the Installed On screen shows where your software runs.
Update gating on the server
The update endpoints check the license on the server side and refuse updates when the key is expired, not Active or belongs to a different application. That makes renewals the reason customers pay again, without trusting the client.
Click through the licenses, generators and activations screens
The live demo shows the admin you would use every day, including the dashboard and API logs.
View PricingLive DemoAppSumo, webhooks and API protection
LMFWC Pro handles AppSumo purchase, activate, upgrade, downgrade and refund webhooks, creates the WordPress user and WooCommerce order, and maps the AppSumo tier to a number of activations. Seven webhook events (add, update and delete license; activate, deactivate and reactivate license; delete activation) can provision accounts in a SaaS backend. Be aware these webhooks are fire-and-forget: no signature and no retries. The REST API has rate limiting, an IP block list, per-route on/off switches and API logs.
Customer-facing extras
Customers see keys, expiry, activations and release downloads in My Account and can deactivate a device themselves. You can add QR codes for keys or activation links and offer a branded PDF license certificate, which business buyers often ask for.
Pricing compared
Kestrel API Manager starts at $199 per year on its product page. LMFWC Pro costs $129.99 per year for one site, $199.99 for three sites and $249.99 for fifteen sites, with every feature in every plan. Neither takes a commission on your sales. Both run inside your WooCommerce store, so payment fees come from your gateway and tax handling stays with WooCommerce and you.
Which should you choose?
- Choose Kestrel API Manager if you want renewal reminder emails, a master key per customer, prorated tier changes, S3 delivery out of the box, or you are moving from WooCommerce Software Add-On.
- Choose LMFWC Pro if you sell plugins, desktop apps or SaaS and want custom key formats, imported key stock, a secret-free activation API, server-side update gating, AppSumo deals, webhooks and API rate limiting at a lower starting price.
- Still deciding? Read our License Manager vs Easy Digital Downloads comparison and the LMFWC documentation to see the setup steps.
Switching from Kestrel API Manager to LMFWC Pro
- Export existing keys from your current store and import them into LMFWC Pro as CSV, attached to the right products.
- Create an application and upload your current release, then point your plugin or app at the public activation and update endpoints.
- Ship one update that calls the new API before you retire the old one, so existing customers keep working.
- Test refunds: confirm keys move to your Terminated status.
Pick the plan that matches your sites
1, 3 or 15 sites. Every plan includes the full REST API and a 14-day money-back guarantee.
View PricingLive DemoFAQ
Is WooCommerce API Manager the same as Kestrel API Manager?
Yes, in practice. The WooCommerce.com product URL is /products/woocommerce-api-manager/ and the listing is titled Kestrel API Manager for WooCommerce, sold by Kestrel.
Does LMFWC Pro send license expiry reminder emails?
No. It delivers keys in order emails and shows expiry in My Account, but it does not send reminders before expiry. Kestrel API Manager does (30, 7 and 1 day).
Can both work with WooCommerce Subscriptions?
Yes. Kestrel renews licenses through WooCommerce Subscriptions or Constellation. LMFWC Pro can extend the existing key or issue a new key on each renewal.
Which one supports offline activation?
Neither is presented as offline-first. LMFWC Pro activates and validates online; any offline caching has to be built into your app.
How much does each cost?
Kestrel API Manager starts at $199/year. LMFWC Pro is $129.99, $199.99 or $249.99 per year for 1, 3 or 15 sites. Check both vendor pages before buying.
Can I sell an AppSumo deal with either?
LMFWC Pro has built-in AppSumo webhook and OAuth handling. Kestrel’s pages don’t list AppSumo support.