I recently built a mobile app (iOS & Android) called Unity Weather. It's a very simple weather app at the moment, but the unique feature is that all measurements are displayed in both Imperial and Metric units.
I built this as an expat learning a new system of measurement, and thought it would be useful for others.
I just launched it on Product Hunt today too! https://www.producthunt.com/posts/unity-weather
Always open to suggestions and general feedback. Thanks!