We typically license PSPDFKit on an annual subscription basis that includes access to the latest builds of the framework & our technical support desk while the subscription is active. At the end of the term of the subscription, the license can either be renewed or cancelled.
If you choose to cancel the subscription, according the terms of the License Agreement you are required to fully remove all files of the SDK from your development environment & ensure that you do not issue any new sublicenses to new customers. Canceling the subscription does not affect sublicenses that you have already granted to your customers while the subscription was previously active. If we've noticed after thirty days that you have not removed the SDK from your app, we will take steps to have the app removed.
If you have an older perpetual licenses, you may continue using PSPDFKit in your app once your access to updates & support expire. We highly recommend switching over to a subscription license moving forward. With Apple releasing a major iOS update each year that essentially breaks our framework the only way to ensure your app continues to work with the latest version of iOS is to have access to our latest build. Further, with our subscription license you guarantee the price negotiated will not change apart from the yearly adjustment built into the License Agreement.
Please understand that we cannot offer you support after your update/support period has ended. Also, we do not sell maintenance & support separately from our licenses or for a percentage of the original fee you paid for the license. If you purchased a perpetual license and you need to update after your support period has ended then we will have to renegotiate pricing.
To see what we have changed since your last available version, check out the Changelog.
This information is based on our default subscription contract. It is possible that your specific contract has variations, so please check your license agreement - this is just a guideline for the typical approach, unless negotiated otherwise.