> ## Documentation Index
> Fetch the complete documentation index at: https://developers.hubspot.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

---
id: 78037401-885c-4438-8bfc-c7c7b0b221aa
---

# Legacy apps

> Learn about HubSpot legacy apps.

export const PublicAppCreationSunsetBanner = () => <Danger>
        <p>As of June 23, 2026, legacy public apps can no longer be created. Existing legacy public apps will continue to be supported, but don't have access to the latest app features. Learn more about this sunset on the <a href="https://developers.hubspot.com/changelog/legacy-public-app-creation-sunset">HubSpot Developer Changelog</a>.</p>
        <p>To get started building apps on HubSpot's developer platform, learn how to <a href="/apps/developer-platform/build-apps/migrate-an-app/migrate-to-the-latest-platform-version#migrate-a-legacy-public-app-non-project-based">migrate an existing legacy public app</a> or <a href="/apps/developer-platform/build-apps/create-an-app">create a new app</a>.</p>

    </Danger>;

<Warning>
  * As of June 23, 2026, legacy public apps can no longer be created. Existing legacy public apps will continue to be supported, but don't have access to the latest app features. Learn more about this sunset on the [HubSpot Developer Changelog](https://developers.hubspot.com/changelog/legacy-public-app-creation-sunset).
  * Legacy private apps are still supported by HubSpot, but don't have access to the latest app features. Learn more about [HubSpot's developer platform](/apps/developer-platform/overview).
</Warning>

Any app created before the `2025.2` release of the HubSpot developer platform is considered a legacy app. While you can still create legacy private apps and manage existing legacy public apps, the available features are limited compared to apps created on the latest version of the [developer platform](/apps/developer-platform/overview).

The articles below provide guidance on legacy apps, but it's highly recommended that you create apps on the latest version of the developer platform (`2026.03`), or [migrate](/apps/developer-platform/build-apps/migrate-an-app/overview) an existing legacy app to `2026.03`.

* [Create a legacy private app](/apps/legacy-apps/private-apps/overview)
* [Manage an existing legacy public app](/apps/legacy-apps/public-apps/overview)

## Access existing legacy apps

To review any previously created legacy private apps or public apps:

* In your HubSpot account, navigate to **Development**.
* In the left sidebar menu, click **Legacy apps**.

<Frame>
  <img width="400" src="https://www.hubspot.com/hubfs/Knowledge_Base_2023-24-25/legacy-apps/updated-navigation-to-legacy-apps.png" alt="legacy-apps-in-new-development-navigation" />
</Frame>