Secure Offline HTML Reader App

I'm looking for a skilled developer to secure offline HTML reading application. The app should be available on Windows and Android platforms, as well as any browser.

Key Requirements:
- Security: Implement password protection, data encryption, and user authentication.
- Content Access: App should come with pre-loaded HTML content.

Ideal Skills and Experience:
- Experience in app development for Windows and Android.
- Strong background in implementing security features.
- Familiarity with handling pre-loaded content in applications.

Please provide examples of similar work done.