The phrase “it’s never too late” doesn’t relate to making a good first impression. You are at risk to lose users if they don’t like the app’s UI at first glance. That’s why user interface is getting so important. It’s literally the first thing users see even before they start interacting with a product.
According to Google research, 26% of all installed apps are used no more than once. The main reason for this is poor UI. To engage users into your interface, you should follow the most recent design trends.