When it comes to security features in Private Note apps, encryption is paramount. Look for apps that offer end-to-end encryption, which means your notes are encrypted on your device and can only be decrypted by you or your intended recipients
https://specificbusiness.co.uk/one-time-links-endless-peace-of-mind-a-deep-dive-into-private-notes-security-features/. Additionally, features like biometric authentication, such as fingerprint or face ID, add an extra layer of protection. Another aspect to consider is the ability to set passcodes or PINs for individual notes or folders, allowing for selective access. And of course, regular updates and audits for security vulnerabilities are crucial to staying ahead of potential threats.