This project is the classic example how to quickly launch and test business model. Nothing unnecessary was made. Client has got the product in shortest time and minimal budget to make the presentation to potential clients and investors.
The work was divided on short iterations with close involvement of client into the process. The very essence of the project - input tables and calculations of the results where created during the first iteration.
After three weeks only the client have got basic functionality to play with and make corrections on next sprints. The same principle was saved for all iterations - the limited amount of functions was discussed, programmed and launched.
As the result, the client had full control on the budget and timeline of development, understanding the cost of each functional module, and had the ability to optimize his investments on the go.