This study evaluates the accuracy of two free speech-to-text (STT) software programs that could be used with Spanish-speaking students diagnosed with learning disabilities. Puerto Rico’s Department of Education uses Spanish as the official instructional language in the learning process in public schools, given that the first language in Puerto Rico is Spanish. Of students receiving special education services in public schools within Puerto Rico, 55% of such students had specific learning disabilities (SLD) while in private schools, 26.4% of students receiving special education were diagnosed as having SLD (Puerto Rico Statistic Institute, 2011). The STT can provide benefits to students with SLD by promoting increases in writing production and decreases in stress and anxiety around writing, and could help them to acquire more independence. Puerto Rican citizens are not familiar with the STT software programs available in Spanish and ways that STT tools can benefit students with SLD in their native language. This study looked at two different STT software programs: Voice Note II on Google Chrome and Siri on the iPad. To investigate the accuracy of the two tools, the same text was dictated to both programs. The text consisted of 270 words and 38 punctuation marks. The resulting text was then scored by deducting the number of errors from the total words to obtain a percentage of correct words. The results indicate that Siri is more accurate when transcribing in Spanish, in part because the software can recognize punctuation mark commands.  However, even when punctuation is controlled for, Siri is more accurate, suggesting that Siri can give a better experience to Spanish-speaking students because it is more accurate and thus less frustrating to use. This study provides teachers, parents and students with information about free tools that Puerto Rican students can use to improve writing skills. The study emphasizes the importance of studying STT as it relates to Spanish-speaking students and provides a beginning to an important line of research.