1. Download Secret Folder by following this link: https://www.apimac.com/download/SecretFolder.zip
2. Drag the app to your Applications folder (if a previous version of the app is already in your Applications folder, simply replace it).
3. Launch the app and click on the "Enter Registration Key" button.
4. Enter your User ID and your Registration Key.
5. Secret Folder is activated for full use!