Don't waste any time or money whatsoever on a custom design until you have validated your app idea by getting people to pay you money for it. Even if you are b

Don't waste any time or money whatsoever on a custom design until you have validated your app idea by getting people to pay you money for it. Even if you are building an app for hackers / designers who are familiar with Bootstrap and might balk at something being "Bootstrappy", your first customers are going to realize that it's just a beta site. If you are building for any other market, you may never need to bother customizing your design. Out-of-the-box Bootstrap looks better than 99% of the niche software out there.