The prompt : What is jalli's app and for whom the app is useful ? 

Jalli’s App is a specialized civil engineering estimation and rate analysis software. It is primarily designed as a Windows application to help professionals prepare highly accurate Bill of Quantities (BoQ) and construction cost estimates.

The app streamlines tedious manual calculations by integrating official Indian government construction benchmarks, such as the Central Public Works Department's (CPWD) Delhi Schedule of Rates (DSR) and Delhi Analysis of Rates (DAR).

For Whom the App is Useful

This application is incredibly useful for professionals working in the Indian construction and infrastructure sector, including:

• Civil Engineers: To automate complex rate analyses and standard material calculations.

• Quantity Surveyors: To generate neat, formula-backed cost estimation sheets.

• Government Contractors: To build estimates that perfectly align with updated CPWD guidelines and circulars.

• Project Managers: To split large, major infrastructure projects into smaller components and later merge them into a single master BoQ.

Key Features & Benefits

• Excel Integration: You can upload raw measurement sheets from Microsoft Excel directly into the app and export beautifully formatted, submission-ready Excel files filled with active formulas.

• Custom Items: Users can easily add non-schedule items (materials or tasks not listed in standard government books) for specialized pricing.

• No Coding Required: It is highly visual and user-friendly, meaning users do not need to memorize commands or code syntax to run an analysis.

• Portability: The working data folders can be saved and transferred seamlessly using a simple pen drive between different computers. 

Note: The official application software and its latest updates are distributed directly through the creator's platform on the Jalli's App Official Website.