Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
GPS Status & Toolbox - Display your GPS and sensor data: Shows the position, number and signal strength of GPS satellites.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Trail Sense - An Android app which uses your phone's sensors to assist with wilderness treks or survival situations.
Slack - A messaging app for teams who see through the Earth!
iHunter Alberta - iHunter Alberta is an amazing mobile application offered by Inside Outside Studio Inc.