Always start with a website and only build an app when the limitations of a website hinder growth and/or experience.
If you only want an app to be listed in the App Store, send push notifications or get a tile on users' home screens then use something like https://appwraps.co/
If you only want an app to be listed in the App Store, send push notifications or get a tile on users' home screens then use something like https://appwraps.co/