The full update feature is free and has a demo example, see here. The incremental update is a paid plugin.

Differences

• Full update updates everything including Electron, Node.js, and all dependencies. Incremental update only updates app.asar and provides the ability to update additional resource directories.
• Full update deletes local data, while incremental update does not affect local data.
• The auto-update feature of full update may require purchasing macOS and Windows developer certificates.

TIP

If you are only developing personal daily tools or have a small number of users, then full update or overwrite installation can meet your needs.

If you need a better update experience or want to bypass purchasing certificates, then incremental update is more suitable for you.

View documentation