I pretty much never give real personal details to websites outside of financial necessity, correct, but also a website is much more secure than an app on average and I'm willing to bet my life on that. The ONLY reason anything is ever made into an App instead of a Website is so that the App creators or operators can harvest MORE INFORMATION from you. That's it. They are not more accessible, they don't support more devices or formats, they're not more secure/encrypted/un-screen-grabbable. They're just worse and they're being set up by people who do not mean you well, 100% of the time.