MyVoice - Speech Assistant is a downloadable application available on the App Store. Designed for devices such as iPhone, iPad and iPod touch, it serves as a speech assistance tool. Users can benefit from this tool to aid in efficient communication. Although there are no specific features detailed, given its title as a 'Speech Assistant', one can expect the AI to have capabilities related to voice recognition, text-to-speech, and perhaps dictation functionalities. More information would be needed to confirm the full extent of this tool's functions. As it is an application, it is likely to have a user-friendly interface and might be customizable to match different user preferences and needs. However, this information could further be confirmed by looking at the tool's ratings, customer reviews and available screenshots on the App Store.