CogniFit is free to signup and take the general training which offers a few games.
If you are serious with your brain training, you should consider subscribing to CogniFit to unlock all tasks and benefit from even more useful features to assess and train your brain. Or if you simply want to play more than 30 brain games!
The monthly subscription is 12.99 USD/month and the annual subscription is 119.99 USD/year.
We also invite you to read the "How to subscribe to CogniFit?" article
Kindly note that you can change or cancel your subscription at any time.