The WorkGuru Android app lets you quickly review existing and add notes to projects.  After logging into the app, click Projects.

Search for and select the required project to add a note to.  Click on the project tile to open it.

Click on the Notes tab of the project details.  You can review existing notes on the project or click the blue plus "+" icon to add a note from the app.  If the user has sufficient permissions they will be able to delete notes from the app as well.

Enter note text and click Save.

The note is now available on the notes tab in the project details page.