Stock chart watcher (SCW):
1. ideally SCW would run on PHP and MYSQL but other platforms will be considered
2. user enters stock symbol like AAPL and SCW displays stock chart
3. user has the ability to draw a rectangle on the stock chart and rotate it (current stock price would be inside the rectangle)
4. SCW needs to keep the rectangle in the same place in relation to the chart curve as time goes by
5. SCW notifies user if the stock price ever goes outside that rectangle
6. a free source of stock chart data is preferred if available (data can be delayed)
Feedback on cost is welcome. I don't know how difficult this is to build.
If it works well and the programmer is good I would hire the same programmer to make improvements.