Add Home Screen Link Button

I need one small—but pixel-perfect—addition to my existing iOS and Android app. A new button must appear on the current home screen in a spot I will point out in the Figma file. When a user taps it, the app should open an external URL in the device’s default browser... (Budget: $30 - $250 USD, Jobs: Android, Figma, iOS Development, iPhone, Mobile App Development, Mobile Development, PhoneGap, UI / User Interface)