I hadn't thought about doing this until my Amazon Kindle Fire HD 10 arrived in the mail and I realized I could wirelessly "mirror" its screen onto my television.
First, thank you Ancestry for having a version of your app in Amazon's app store. As cheap looking as some Amazon apps can be, Ancestry did a great job with the Amazon version of their mobile app.
You can try this too! You'll need an Amazon Fire phone or tablet and an Amazon Fire TV stick or Roku. I already had the Roku stick (highly recommended by the way) and they work great together. You can find the mirroring option under your device's display settings.