PaperTracking app analytics for December 30

This app enables users to store article information by putting doi in the app and fetch metadata using crossref api. Users can archive the article information such as titles, authors and published years without typing them. The articles can be categorized as "Reading", "Read", "Want to read". It is also possible to make tags and put them on the articles and filter the article when searching. Users can also search articles by keywords, published year, and register date. The number of the registered articles can be studied using the bar chart with x axis of register month or year. There is a macOS app and the data can be shared through iCloud.