Voters using Voting Advice Applications (VAAs) often struggle with comprehension issues, leading to satisficing behavior. Conversational Agent VAAs (CAVAAs) help users of VAAs to understand the political attitude statements further; in these tools, a chatbot (CA) has been added to which users can address comprehension questions. While early research shows various positive effects of CAVAAs , these studies have only made comparisons with a basic VAA without supplementary information and not with an enhanced VAAs (VAA+), which include clickable buttons in the web-environment . The current research, therefore, compares four VAA versions: a basic VAA, a VAA+, a CAVAA, and a CAVAA+. Two studies are reported: in the first studies participants work with one of the tools on a desktop pc; in the second study they do so on a mobile device.