I have worked extensively on word processing applications including an app I am currently developing soon to be released on the market. I could make it in JAVA which would make it platform independent, or another language if you care to specify a preference. I believe, if you agree, that it would be best for me to provide a version which can run both in command line and GUI for versatility.
I am flexible on the cost, I understand these costs may add up. And also that my relatively new status on freelancer may seem like a risk, but you have to start somewhere.
I think the best way to tackle this risk free would be for me to provide you a draft for a third of the bid cost. Then if you are happy I will continue to a second iteration with your initial feedback which I will present in exchange for the second portion of the cost, and finally after one more review I will deliver the final product. Of course I will be happy to , even after that, address any issues you may have.
I projected 2 days for this but this may take less or more time depending on your response at each iteration.