LicenseKit helps you protect your software with commercial licenses on all major Apple platforms (iOS, iPadOS, macOS, tvOS and watchOS).
Features

License Validation
LicenseKit can validate licenses in flexible and powerful ways.

Binary Licenses
LicenseKit lets you define licenses with source code.

File-Based Licenses
LicenseKit lets you define licenses with plain text files.

API/Cloud-Based Licenses
LicenseKit can validate licenses with web requests.

Gumroad
LicenseKit can integrate directly with Gumroad.

Service Composition
LicenseKit can compose services to create powerful combos.
Integrates with
Pricing
LicenseKit is free to start using and affordable to scale. It has a monthly and a yearly payment plan.
Basic
Silver
Gold
Licenses can be purchased from the Gumroad e-shop. Reach out if you want to include any add-ons, or if you have other support needs or preferred methods of payment or invoicing.
Enterprise Licenses
The standard tiers are aimed at indie developers, startups and small businesses. Companies and organizations with more than $1M USD in annual proceeds can reach out for a custom plan.
License Terms
By purchasing a license, you acknowledge and approve the terms & conditions.
GitHub
LicenseKit is hosted at GitHub, where you find the latest version, online documentation, a getting-started guide, code samples, issue tracker, and more.