L.Anusha, K.Narendra, G.Tirupathi, P.Pranathi, K.Ganesh, Mr. N. Prasanth 03 04 The rapid expansion of mobile technologies and widespread internet accessibility has significantly transformed the traditional retail ecosystem particularly in the grocery sector Conventional grocery shopping methods require customers to physically visit stores resulting in time consumption long waiting queues limited product comparison and inconvenience in managing daily household needs To address these challenges this project proposes the design and development of a Go Grocery App a smart mobilebased online grocery ordering system that enables users to purchase grocery items conveniently securely and efficiently through a digital platformThe Go Grocery App provides a comprehensive solution by integrating essential features such as user registration and authentication product browsing cart management online order placement digital payment processing and realtime order tracking The system supports multiple user roles including customers administrators and delivery personnel ensuring smooth coordination between order management inventory control and delivery operations A centralized backend server manages application logic data storage and secure communication between system components To enhance transaction transparency and data security the proposed system incorporates blockchain concepts for recording order and payment transactions Blockchain technology ensures immutability prevents unauthorized data modification and improves trust among users by maintaining a tamperproof transaction ledger Secure authentication mechanisms encrypted data storage and trusted payment gateway integration further strengthen system reliability and protect sensitive user informationThe implementation of the Go Grocery App demonstrates significant improvements in shopping convenience operational efficiency and transaction security when compared to traditional grocery purchasing methods Experimental results and user evaluations indicate faster order processing reduced manual effort improved data integrity and high user satisfaction The proposed system offers a scalable and adaptable framework that can be extended in the future with advanced technologies such as artificial intelligencebased product recommendations multivendor marketplace support and fullscale blockchain deployment Overall the Go Grocery App serves as an effective and modern solution for digital grocery management in todays fastpaced lifestyle Copyright (c) Journal of Science Engineering Technology and Management Science. All rights reserved 2026