“Brainastic” is the first local cognitive training application developed and verified in Hong Kong, which combines scientific research, training, monitoring and entertainment in one. With more than 20 training games distributed in 6 cognitive training areas, “Brainastic” allows users to train their cognitive ability in a challenging and fresh way. Training data is converted into colorful graphs and charts which allow users to understand their performance simply and clearly. A local verification of “Brainastic” was conducted by the Chinese University of Hong Kong during 2017 to 2019. Two research papers have been launched. The results are very satisfactory which show using “Brainastic” as regular training can improve cognitive ability and slow down brain degeneration effectively.