Redsign a current Android APP and made in IOS.

I'm in need of a skilled mobile app designer who can redesign an existing android app and also make for IOS.

there will be two versions (android / Ios)

EDITED:

this project is not only to change the color or the images to the current app.
you need to know about programation in arduino, bluetooth and android ,, because this app will manage a lock using the smartphone.
I send you the current android app in order that you could understand and know how the buttons work
please do not offer your job if you can not open the current job and see how it works

Key Requirements:
- The design modifications primarily focus on be friendly and easy to use
- For the user interface, I'm looking to make changes to the color scheme, font styles, and the overall layout.
- In terms of functionality, there are a few particular areas that need work:
-The most secure.
- easy but secure connection
- Enhancing user authentication to ensure robust security measures.

Ideal Skills and Experience:
- Proficient in design tools and software to implement the required changes effectively.
- Excellent understanding of app functionality and how to enhance it through new features.

If you have the expertise and creative flair to tackle these modification tasks, I'd love to hear from you.