Mind-mapping and whiteboarding Need to do some mind-mapping on the go? Check out Kinesthetic's €2 Thinking Space Pro. The app gives you everything you need to create visual maps for your thoughts and plans. It integrates with several desktop-based mind-mapping programs, including Freemind, Xmind, and MindManager. Plus, it lets you embed live hyperlinks in your maps and create both folders and tags; there's also a free, ad-supported version.
When it comes to whiteboarding, the aptly named Whiteboard app from Matt M is as simple as it gets. The free utility gives you a blank surface on which you can sketch out ideas, using your finger as the marker. Whiteboard includes a home screen widget and several options for customization.
For a collaborative whiteboarding experience, grab Group Technologies' Groupboard. The free version of the app allows you to share your whiteboarding space with up to five other users, who can be connected via the Android app, its iOS counterpart, or the Groupboard.com website. To share with more than 5 users, Group Technologies offers a 15-user license for $10 a month and a 50-user license for $20 a month.
Conferencing Thanks to Android's tight integration with Google Voice, on-the-go conference calls are a cinch. Just set up a free Google Voice account and download the free Google Voice app to your smartphone. Then, whenever you need to initiate a conference call, ask the call participants to dial in to your Google Voice number. As each new call comes in, the system will give you an option to conference it with the other calls. (Note: The Call Screening option in your Google Voice settings needs to be enabled for this conferencing option to work.)
You can join Web-based conferences held via Cisco WebEx or Fuze Meeting by downloading the official app for either service. Both apps are free, though you'll need to have an account with the service to use its application.