Frequently Asked Questions

The commercial products evaluation license term is 10 days which can be extended by Qt Sales. During the initial 10 days period Qt Sales will reach out to you to check if you need additional help or a longer evaluation period.

Evaluation enables all Qt product features but may have limited access to maintenance releases. During the evaluation period, you can use the product to the full, but you are not allowed to use it for production or actual product development purposes. 

After the free evaluation period, you need to a) either purchase a license or b) uninstall and cease from using the product.

This is not permitted without written consent from The Qt Company. If you have already started the development with a Qt Community Edition, please contact The Qt Company to resolve the issue. If you are unsure of which license or version to use when you start development, we recommend you contact The Qt Company to advise you on the best choice based on your development needs.

Term licenses are legacy license types that were sold for a short period in 2018 and 2019. Current corresponding commercial licenses are "Subscription" licenses with improved terms and conditions and access also to Qt 6.

For old legacy license types, see also https://www.qt.io/terms-conditions/legacy-disclaimers

You can buy licenses directly on the online store at https://www.qt.io/pricing. If you need Distribution Licenses or Licenses for other products, then you can buy the licenses also from a sales person in your region or a reselling partner.

We believe in the Free Software movement where using software comes with certain rights, but also certain obligations. Use of open source licensing gives users four primary degrees of freedom when using Qt applications or devices:

• The freedom to run the program for any purpose
• The freedom to study how the program works and adapt it to specific needs
• The freedom to redistribute copies so you can help your neighbor
• The freedom to improve the program and release your improvements to the public, so that the whole community benefits

The freedoms are non-negotiable and absolute, the freedoms cannot be enjoyed selectively or partially, you also need to pass them to your users.

The Free Software community has thrived because of these rules, but there are also developers who never intend to observe or cannot comply to these rules, and thus should get a commercial license. The Qt Company exists to support both sets with the dual offering.