The 2.0 version of SecureNotes for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This Mac application is an intellectual property of Information Appliance Associates. The software lies within Security Tools, more precisely Personal Security.
From the developer:
This is an application that acts as a safe deposit box for your Macintosh. With this program, you can safely store everything from your Driver's License to your auto insurance policy number as well as source code snippets for you developers out there. Even entire movies you want to keep private and safe.
You may want to check out more Mac applications, such as PasswordVault Lite, which might be similar to SecureNotes.