EMARKETER - Aug 20 - In the latest episode of eMarketer's "Behind the Numbers" podcast, analyst Rahul Chadha and forecaster Showmik Podder break down some of the key data in eMarketer's new estimates for mobile app usage. Which app categories are growing fastest, and why? Today, 94.2% Americans with a smartphone are using an app. There are two app categories that 4 years ago ~5% of smartphone owners were using - dating & grocery shopping. Currently ~ 25M Americans are using dating apps, that represents ~ 22% of all singles in the USA. Nearly half of 18-25 years old are open to the idea of using a dating app. Half of dating apps' users login daily.