Before publishing app, the ManyChat Review Team makes sure that:

1. The app can be installed via installation link
2. App settings capture enough information to make the app work
3. All app actions are accessible inside flow builder
4. App actions work in accordance with their title and description
5. The app doesn't capture unnecessary data
6. All external sources that impact the app's actions performance are configured properly

These apps are provided by 3rd-party developers. In case of any questions please contact them directly. You can find developer's contact on their app page, under the "Author" tab

We're working on tools to enable developers to create apps. If you didn't find the app you need, we would recommend you to start a thread in ManyChat Community. This will attract more attention to your particular case and developers may recommend you tools relevant to your needs.

Please refer to this documentation. It covers all steps: from app creation to app distribution.