While I'm not really a potential customer I have tried it out and I like the interface, you've kept it clear and to the point. Two things in terms of feedback -

While I'm not really a potential customer I have tried it out and I like the interface, you've kept it clear and to the point. Two things in terms of feedback - the name socialtrade implies that there is some kind of social aspect of the app, I couldn't see any? I like the red slider / window for the time period at the bottom but it wasn't immediately obvious that was what it did. Perhaps some way of showing that the red slider is linked with the view the user sees would be useful (in design terms maybe some color coordination or make the main view look like an enlarged version of the slider).