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There are diseases that make it difficult to use computational tools efficiently. Of course, some entities and research centers develop software applications to facilitate access to the use of equipment to people suffering from diseases that significantly alter their motor skills. For the software product to perform the functions for which it was designed, some tests are performed. One of them is the usability evaluation of the software, which is often done in an empirical way. This article proposes a method with a heuristic approach to evaluate the utility of software designed to facilitate access to computing for people with motor disabilities. Often, in useful subjects, a developer who does not know the specific needs of the people mistakenly approaches the guidelines in the design of the software. This research makes the importance for what users with pathologies assign weights to the characteristics of the software that experts in usability consider important. [ABSTRACT FROM AUTHOR]