How to make custom iOS apps easier for Spotlight to find

I write lots of little test apps on my devices. Is there some metadata I can add to the app so it appears more readily in Spotlight searches?

For instance, I made a laundry timer app named Lavado

Can I make it appear in Spotlight searches when I search for "timer" or "laundry"?

This is not for the Apple App Store, just on my devices.