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Please note:
  • Legacy public apps and private apps can no longer be created.
  • Existing legacy apps are still currently supported, but don’t have access to the latest app features.
Any app created before the 2025.2 release of the HubSpot developer platform is considered a legacy app. While you can still manage legacy public and private apps, the available features are limited compared to apps created on the latest version of the developer platform. 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 an existing legacy app to 2026.03.

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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.
legacy-apps-in-new-development-navigation
Last modified on October 30, 2026