Secure Notes - Secret Notepad is a lockable notepad app that lets you password-protect private notes, to-do lists, memos, audio recordings etc. You can customize your secure notes by altering its font size, font color etc. with the help of Notes Lock - Secret Notepad app. Secure Notes - Secret Notepad app makes it easier for you to note down lectures or keep secure notes for your school, college or university classes. You can also update checklists and to-do lists for shopping, work etc. it’