Do not follow the crowd when it come to downloading an app or an extension for the sake of the security of your privacy. It a lot easier to stay safe online by regularly doing your due diligence and inquiries before downloading an app, granting it unlimited access to your system. And finally, always download from the official channel.
I don't know, what the intention of your comment is? And no specific app has been mentioned. In that context, it can be assumed that sufficient research has been done on the security and usage policies of all apps. Accordingly, the publicly discussed topic is being mentioned. Now let's get to the main point, both a company website and app can exist. But in that case, there will be no discrimination, nor will the features change. However, it is comparatively presented more simply within the app. But those customers who use desktop or computer, they generally feel comfortable using extensions or websites.
However, due to technological advancement many unscrupulous individuals have become desperate to deceive people. Therefore, it is reasonable to always be cautious regardless of which apps we use. However, if there is ever a need for account registration within the app, then access to "contacts, camera, location, files and media, microphone" is given unknowingly.