App Demo Video Creation

I need a professional screencast demo video for our app, Nexsyrus. The video should clearly explain every feature of our application.

Requirements:
- High-quality screencast
- Professional voice-over provided by freelancer
- Clear, engaging, and informative content

Ideal Skills and Experience:
- Experience in creating app demo videos
- Proficient in screen recording software
- Strong voice-over talent with a professional tone
- Ability to explain technical features in a simple way

Please include samples of previous work.