Purchasing a subscription will provide you with access to:

  • the Allen App,
  • downloadable material,
  • study guides and groups, and
  • research and development.


The Allen App includes the Allen Cognitive Disability Model (ACDM), the Allen Cognitive Levels (ACLs), and the Allen Cognitive Level Screen, 6th Edition (ACLS-6).


Only an iPhone, iPad or Android mobile device can access the Allen App. To see if your mobile device can access, click example.


The current price of an annual subscription is USD $60.00 (price is subject to change).

To purchase, click the button below. You will also need to create an account or log in.