Robinhood - Free stock trading service.

KosmoTime - The to do list with super powers

Scout Finance - Free finance app that's like having a Bloomberg in your pocket. Download:

Cron - Cron Calendar.

Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.