BEST APP

Postmates — launched in Chicago in February — might be best described as “delivery for anything.” The service lets you order food or delegate errands via a fleet of couriers, available 24/7. The best part: You can use it with almost any business, even those that don’t offer delivery. My friends and I currently use it for quick, gleeful doses of Chipotle, but the possibilities are truly endless. Free on iOS and Android (deliveries start at $5); Postmates.com — R.D.