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.

The button has to blend in flawlessly with the current UI: same size, colours, typography, shadows, states—everything. I will supply the exact SVG/PNG asset and any style tokens you require, along with access to the code repository and build credentials.

Once finished, the builds for both platforms must compile without warnings and pass the usual store validations. The only visible change to testers should be the new button and its working link behaviour.

Please tell me which framework or language you prefer so I can confirm compatibility with the existing codebase, then estimate how soon you can have a test build ready.