The Medexter Healthcare products iPhone App Hepaxpert/Interpretation, an iPhone/iPod Touch application of our medical expert system Hepaxpert for the automated interpretation of hepatitis A, B, and C serology test results, and the medexter-Fuzzy-Arden-Syntax compiler, one of the medical knowledge representation and inference software tools we developed, were presented at the annual Austrian eHealth conference that took place under the motto “Health Informatics meets eHealth” in Vienna/Austria from 6 to 7 May.