If you're noticing your favorite influencers using curated templates in their Instagram Stories lately, then you're familiar with Unfold.

The app offers a series of templates for polished, design-driven Instagram Stories, gets about 100,000 downloads a day, according to co-founder Andy McCune. It has been ranked as the No. 1 photo and video app in the App Store several times this year, and influencers and celebrities like Camila Cabello, Olivia Culpo, Selena Gomez and Ashley Tisdale, as well as brands like Topshop, Four Seasons and Equinox Gyms, use it, he says.