ETC明細 is an iPhone app developed by Shinichi SUGIURA, available for free in the Lifestyle category. This app allows users to log in to the "ETC Usage Inquiry Service" website to automatically retrieve usage details and generate PDF documents. One of its key features is the ability to view ETC card usage dates in a calendar format, with support for setting monthly cut-off dates for convenient monthly displays. Users can also access a widget for quick viewing of usage details. Initially, users have limited viewing times, but unlocking additional features through in-app purchases removes these restrictions. Note that there is a budget-friendly sister app with fewer features available for users who prefer a simpler interface. Data is shared between the main app and its sister app, allowing for seamless continuity in usage.