There are many mind mapping apps available. I’ve noted the software on this list that have a mobile app, but I thought I’d share a few additional ones:
Simplemind. Simple, reliable mind mapping software for Android, iPad, iPhone, Mac, and Windows.
MindNode. Highly-rated mind mapping app for Mac and iOS.
Mindo. Basic mind mapping app for iPad.
Maptini. Collaborative mind mapping app for iPad, iPhone, or web browser.
Popplet. User-friendly mind mapping app for school and work, available on iOS or web browser.
iBlueSky. Uncluttered, intuitive mind mapping app for iPad, iPhone, and iPod Touch.