Boston-based Constant Therapy has raised $1.96 million for its mobile-enabled brain rehabilitation offering, according to an SEC filing. This brings the comapny's total funding to at least $2.7 million. Existing investors include Boston University, TiE Angels Boston, and serial entrepreneur Andy Palmer.

Constant Therapy has developed a mobile app designed to provide therapy to patients who have traumatic brain injury, stroke, aphasia, and learning disabilities.

The company was founded in 2012 by Boston University professor Swathi Kiran, who was head of the Aphasia Research Laboratory. While working with patients, Kiran noticed that people with cognitive, language, and speech disorders could benefit from a tool that combined technology with communication therapy. She then worked with three programmers, Veera Anantha, Mahendra Advani, and Ehsan Dadgar, to develop mobile versions of existing speech therapy tasks.

The offering, which launched in June 2014, uses a feature called the NeuroPerformance Engine to create a personalized profile of each person’s strengths and weaknesses. The app then delivers a combination of exercises to improve their brain function. Constant Therapy’s app offers about 58 science-based task categories and more than 60,000 exercises, according to the company.

Some healthcare organizations that use Constant Therapy include Spaulding Rehabilitation Network, the Stroke Comeback Center, and The MossRehab Aphasia Center.

Patients and caregivers are also able to purchase an app subscription for $19.99 per month, $199.99 per year, or $299.99 for three years. If users do not already have a tablet, Constant Therapy said it would provide people who purchased one or three year subscriptions with a seven-inch Android tablet.

In 2013, Frank Moss, former MIT Media Lab professor in the New Media Medicine group and co-founder of Bluefin Labs, joined Constant Therapy as the company’s chief strategic advisor. During his time at the MIT Media Lab, Moss was involved in creating startups including EyeNetra and ginger.io.