Magoosh can definitely help you improve on a retake :) In fact, our plans come with a score increase guarantee! On average, our users see an increase in their GRE score of around 8 points.
The amount that you will be able to improve will depend a lot on a few key factors:
- Your starting abilities
- The amount of time you have to devote daily/weekly/monthly
- How efficient you are at self-analysis and self-correction
Our study plans are designed to help everyone improve, including students who have taken the test already. For advice on how to improve when studying for a retake, see our article on retaking the GRE :)