Serious question, why would you want a separate app for a search engine?
You can set it as the default in your browser.
Discussion
I’m on the road all day for work and can use mobile to study, learn, grow, connect. My desktop time is very small.
Do you not use a mobile browser like brave that you can set your preferred search in the browser settings?
I set my general settings on my iPhone and iPad for Brave as my default browser rather than Safari, but that cycles through the Brave app. Is that what you’re asking?