Let&#x27;s say you find some hyper-specific niche, like calculators for some obscure section of the American tax code. Very, very useful for a small amount of people. So you throw together an app in less than a day and put it on the app store.<p>The market is so small, that there really isn&#x27;t room for more than 1 app, and it&#x27;s so specific, people aren&#x27;t going to really bother searching around. So being the first or second app they see when they search &quot;section XYZ tax calculator&quot; is critical to getting any installs.<p>As the app stores algorithms for thinly installed apps basically come to down to total installs, followed by rating, followed by recent updates, paying $5 on fiver for a hundred installs can really make a difference. Once you rise enough, people start finding you organically, they install, you rise higher, and it becomes a feedback loop.<p>This is a contrived example, but if you can make apps and want to sling ads as a way to earn money on the side, it can really help.