I personally would never waste the money on such a program but that is just me. You are going to need to bring your actual hard copy logbook to future interviews so why one would ever want to do the work twice by putting times in the actual logbook then on some computer program is beyond my wildest imagination. I prefer to keep things simple and only have to log trips one time versus creating more work and doing it a second time. A friend of mine recently wasted the money on such a program and he finally came to his senses after we debated this issue and he is now doing as I and many others do by strictly using a logbook to log.
People will always argue and say "well if I lose my logbook", blah, blah, blah, then I will have a backup logbook on the computer", well that is great, fine, and dandy, but the simple task of photocopying the log pages will accomplish the same objective. Regardless, you still will have to transfer the numbers to a real hard copy log for interview purposes. I have met a few at interviews over the years who showed up with pages and pages of messy, and unorganized computer print outs and needless to say these folks didn't make it overly far into the interview process.