MediBabble Translator is a medical translation tool for examinations and taking histories. Contains Spanish with additional free downloads for other languages. Contains playable recordings and questions. For iPhone, iPad, & iPod Touch. Free.
Medical Spanish is a phrasebook with audio, search, conjugation and bookmarking. Highly recommended by the iMedical App Blog.
Google Translate is a language translation search engine.
Health Information Translations - quality health education for diverse populations.