How to search for Android apps without ads? Is it possible to limit searches within the Google Play Store to apps (gratis or paid) that do not contain ads?

If it's not possible within the Google Play store, is there another effective way to accomplish this?
There's the Playsearch website which allows you that without having to install anything beforehand:


Playsearch website, your criteria marked (click image for larger variant)

In addition to what you asked for, you even can specify how long ago the last update should be at maximum, what size the app should have, what Android version it should support, how well it ranks (stars) – and how wide-spread (number of installs) it should at least be.