Upgrade existing Xamarin app

Job ID: 35878550

Budget: €18 – €36 EUR

I'm looking for someone who can update and fix some bugs in our app that supports Android and iOS. The app is made in Xamarin/Visual studio. All sources are available.

We need several changes in order to keep the app up-to-date.

What we need:
* Upgrading the codebase to the latest .NET version.
* Updating all dependencies to the latest version.
* Making the app less depended or removing dependencies are a plus.
* The application should support the latest version of iOS.
* When upgrading, the iOS version will have a few bugs that needs to be fixed:
* The navgiationbar changes into a black bar. This should be blue like defined in code.
* The menuitems will be shown as seperate icons in the navigationbar instead as a menuoption.