Mind Mapping
The practice of mind mapping goes beyond the brainstorming exercises you did in elementary school. When you're beginning a business, it's important to think through everything, and being able to collect your thoughts in a flexible way, especially when you're on the go, is valuable.
MindMeister is just one example of a great, simple mind-mapping tool that creates maps to help you organize your thoughts, build out cohesive workflows, and communicate them easily with others. When you're brainstorming, the last thing you want to do is be hampered by your technology. By making it so easy to note and map out your thoughts, MindMeister helps you free up headspace so that you can focus on your next big idea.
MindMeister – iOS / Android
Also check out 10 iOS Brainstorming Apps to Organize Your Ideas