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https://www.forbes.com/sites/forbesagencycouncil/2018/09/13/five-features-businesses-need-to-consider-when-building-a-mobile-app/

Five Features Businesses Need To Consider When Building A Mobile App The app ecosystem is competitive, and users are increasingly picky when looking for an app they're willing to commit time to.

https://www.forbes.com/sites/johnkoetsier/2018/08/20/people-spent-85-billion-hours-in-whatsapp-in-the-past-3-months-versus-31-billion-in-facebook/

People Spent 85 Billion Hours In WhatsApp In The Past 3 Months (Versus 31 Billion In Facebook) That's 11.425 hours for every human being on the planet.