A test is one short game that requires you to use your cognitive abilities. A challenge combines several tests to get a more complete picture of your current cognitive performance.
By doing your daily challenge, consisting of four tests, your C-Score can be calculated, and the variety of tests also allows BrainLabs to calculate individual cognitive domains: reasoning, short-term memory, and verbal ability.
A different daily challenge is available each day, and new challenges may be developed to target specific aspects of your cognition or lifestyle.