To create a note taking app that uses Git as a backend, you would need to have a solid understanding of Git, version control systems, and how to integrate Git with your app. Here are the steps you would need to follow:

1. Choose a programming language and framework to develop the app. Examples include React Native and Ruby on Rails.

2. Decide on the structure of your Git repository. This may involve creating separate branches for each user, storing notes as separate files, or using a database to store notes and metadata.

3. Design the user interface for your app, making sure to include features that allow users to easily create, edit, and delete notes.

4. Write the code to integrate Git with your app, using Git APIs and libraries as needed. This will involve handling Git operations such as cloning, pushing, and pulling.

5. Test the app to ensure that notes are seamlessly synced between users. This will involve setting up multiple user accounts, making changes to notes, and verifying that changes are properly propagated to all users.

6. Deploy the app to a server or hosting platform so that users can access it from anywhere.

7. Provide ongoing maintenance and support for the app, including bug fixing and updates as needed.

Some key considerations when building a note taking app with Git as a backend include the scalability of your app, data privacy and security, and the reliability of your Git setup.
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