There are some differences in approach that need to be considered. If you're building an app purely for fun, you can expect users to create an account before t

There are some differences in approach that need to be considered. If you're building an app purely for fun, you can expect users to create an account before they start using your software. If you're building a business, you may need to allow people to try your software without creating an account at all. The alternative is a super-high bounce rate. This could arguably be called a UI issue, but it's also marketing. If you don't think about stuff like this from the start, chances are you're going to need more than a trivial rewrite if your idea starts to take off. If you're intent on bootstrapping in your spare time, that can be a killer.