Minimum Requirements For Publishing Apps

Hi,

Completely new to all this, I have asked a couple of app developers to create a simple app, detailed below, but I have been told that App Store doesn't accept such a simple one.

I'd like to know the minimum requirement by Apple, please.

We only need the simplest of apps - literally an icon, when clicked, it takes the user to the home page of our website.

There is a one-time download fee payable to "App Store".

The app is valid for 3 months. The fee would be around 12 dollars. The app subscription is renewable.

Is this acceptable? If not, how can we modify it to meet the requirements by App Store. please?