| Summary: | This paper presents a software solution for mobile devices
to help a consumer to save during the shopping process, allowing
getting a sense of price variation before to go the place of purchase, so
contributing to decision-making. Through the application, the
consumer creates lists of products, updates and shares prices, allowing
other consumers are aware about this information, and it performs
calculation of lower cost of the shopping list using your mobile device.
Simplex Method was used to calculate the lowest cost also used in
Linear Programming to calculate the optimal solution, minimizing
costs. Tests with application functionality have been made to supply a
list of basic food products and lower cost calculations were made
taking into account the total value of the list in various establishments.
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