NuowuyiaCalc

The app integrates purchase costs, study duration, and course plans to provide a clear view of the actual investment in each device. Logging a study session automatically updates cumulative hours, cost-per-hour, and utilization rates over the past 28 days. Investment charts compare device costs against usage time based on actual logs, while course pages summarize the investment across different devices for the same project, displaying planned versus completed durations separately. After entering resale valuation estimates and future usage plans, you can view recommendations—such as keeping the device, considering a sale, or a short-term trial—based on factors like days of inactivity, along with the rationale behind each suggestion. These recommendations do not replace your own decisions, nor do they represent actual transaction prices. You can photograph your devices or upload existing images to document purchase details and physical condition, and you are free to edit profiles or delete study logs and attachments at any time.