Dividend Calendar, developed by BlackJin, is a free Android app that helps users manage their stock portfolio with ease. The app is categorized under Business & Productivity and subcategorized under Finance. With this app, users can check the ex-dividend date and payment date of their stocks in one place, making it easier to manage their dividend portfolio.

The app allows users to enter the stocks they have, and it displays the next ex-dividend date and payment date. This feature saves users time and effort that they would otherwise spend searching for this information. The app has an intuitive interface, making it easy to use for both novice and experienced investors.

In conclusion, Dividend Calendar is a must-have app for investors who want to manage their dividend portfolio effectively. With its user-friendly interface and useful features, it is a great tool for achieving economic freedom through steady dividend investment.