> For the complete documentation index, see [llms.txt](https://macdocs.supgpt.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://macdocs.supgpt.app/getting-started/license.md).

# License

Licensing is only available for the macOS version.

## How to Obtain a License

To purchase a license, visit [this link](https://supgpt.app/#open-checkout) and follow the provided instructions. Once your purchase is complete, you will receive an email containing your receipt and license key.

## Entering Your License for the First Time

Upon launching the app for the first time, you will see a popup panel. Here, enter your license key and click **Continue**.  

<figure><img src="/files/KKBEvzhhrMPPE2Mj6T2H" alt=""><figcaption></figcaption></figure>

## Changing Your License Key

IIf you need to update your license key, navigate to the Main Menu and select **SUPgpt -> License.**

<figure><img src="/files/ZuewIrjJW6ehIDtVLF51" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/v6Nz1CAiLtGuKXqWFUKg" alt=""><figcaption></figcaption></figure>

Then click **Change.**

<figure><img src="/files/qCuDxmLvz6yNM1kZYMd2" alt=""><figcaption></figcaption></figure>

After entering your new license key, click **Submit**.