Create Mobile App
Create a Mobile App for iOS and Android. If you are in SaaS and have a mobile friendly website (this would most likely work with eCommerce too).
You can actually use a free tool to turn your site into a mobile app: https://www.appypie.com/convert-website-to-mobile-apps. Congratulations, you’ve now got your first mobile app which you can publish on Google Play and the App Store.
If you are in SaaS I’d suggest redirecting users straight to the sign up page, it’s a great way to collect email addresses and If you build a useful mobile app and perform ASO you can receive 100k+ installs depending on your industry.