Thank you! Signed up for the app. As a person hesitating whether to make a mobile app for my own product, may I ask what was the reason for launching mobile fi

Thank you! Signed up for the app. As a person hesitating whether to make a mobile app for my own product, may I ask what was the reason for launching mobile first? It seems to me that a web app is cheaper to develop, easier to test, collect feedback and iterate on (and possibly provides better blog writing experience) and thus would be an ideal first product. Am I missing any strategic reasons in favour of launching mobile first?