A free app for Android, by Financial Productivity Tools.

The Index Fund Calculator app is designed to help investors make better decisions by giving them the ability to calculate returns and estimate investments in minutes. With the app, investors can calculate returns, estimate future performance, and determine how much they need to invest to achieve their financial goals.

In addition, the app can be used to calculate a SIP (Systematic Investment Plan) for your mutual fund investments. A SIP is a strategy that involves investing a fixed amount of money into a fund every month or every other month. The goal is to grow your money over time.

Investors can also use the app to plan their mutual fund investments. The app will calculate the amount of money that will need to be invested in a fund in order to achieve a certain financial goal.

This is useful for investors who want to know the returns on their investments and how much they need to invest to achieve their financial goals.