I am looking for a mobile app builder extensions which offer a feature to add videos in the product descriptions. Please suggest.
SimiCart Mobile App Builder offers the exact solution for you, with a feature named YouTube Integration. This allows you to embed a YouTube video into your product description. The final result will look like this:
Hope that helps!
MageMob App Builder helps you easily and quickly build a custom mobile app for your Magento
Store. It gives you all the flexibility without the headache of developing your apps from the ground up. According to customization magento mobile app extension allows to support videos in product descriptions.