Sum Fun - A fun number puzzle game for iPhone and iPad.
Lumosity - Discover what your mind can do. Improve memory, increase focus, and find calm - with the #1 brain training app. Get started now.
HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
Elevate - Elevate is an award-winning brain training tool designed to build communication and analytical skills.
Math Master - Brain Quizzes - Math Master is a free math quiz game designed for all ages!
Brain Workshop - Brain Workshop is a open-source version of the dual n-back brain training exercise.