React Native - A framework for building native apps with React
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
ComponentKit - ComponentKit by Facebook: A React-Inspired View Framework for iOS
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Onsen UI - HTML5 Hybrid Mobile App UI Framework - work with Angular, React, Vue, Meteor & pure JavaScript. Material & Flat design.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.