Brain Workshop - Brain Workshop is a open-source version of the dual n-back brain training exercise.
Lumosity - Discover what your mind can do. Improve memory, increase focus, and find calm - with the #1 brain training app. Get started now.
40 Hadiths - Hadith Nawawi is an Islamic Android App that is designed with the purpose to enlighten the heart and souls of Muslims around the globe with the authentic teachings of Prophet Muhammad (PBUH).
Memo-Shaper - Memory training app. Stimulates the brain, concentration and visual memory.
Brainturk - Improve your brain performance by playing 40 + brain games designed by brain researchers and psychologists based on principles of neuroplasticy. It is free to start playing online. Challenge your brain!
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.