With Secret Notes you will be able to write notes and hide them behind a calculator app.
Install set your pin and you are ready to write your secrets.

All the notes are stored using all the latest tools provided by Android and encrypted into a ciphered database using RSA security algorithms.
No one - me neither - but you will be able to access to your notes list.

Google drive integration has been implemented in order to allow to store the notes in your Google Account. Obviously all the files uploaded will remain still encrypted.

This app is supported by ads (see privacy policy to discover in which way your personal data are managed) but you can unlock ad-free version for free in app settings.