jCalsi is a free Android app developed by Vidya S Softwares. It falls under the category of Utilities & Tools and provides users with a convenient way to calculate jewellery prices and interest rates.

The app offers a comprehensive set of features for jewellery calculation. Users can easily calculate the price of gold and silver items, find out the fine weight of these items, and determine the fine price based on the weight. This is particularly useful for individuals involved in the jewellery industry or those who want to keep track of the value of their precious metal items.

In addition to jewellery calculation, jCalsi also includes interest calculation functionality. Users can calculate both simple and compound interest, as well as monthly interest rates. The app also allows users to find out the duration between two dates, making it useful for financial planning and loan calculations.