This iPhone app misses the mark, says reader

We recently featured free engineering apps for the iPhone. One of the apps was iMachinist 1.1.3. The developer touted it as “community driven machining/engineering calculator.” The idea: if you don't see an equation you want, just email the developer and he will add it. Evidently, this is not exactly true. A reader recently wrote in, saying, "I have had the app for over 6 months if not more. It has an annoying bug in that the period key doesn't come up on the first occurrence of entering values in some circumstances. I e-mailed the author and he responded that he would fix the bug in a few weeks. That was over 6 months ago. I consider the author non responsive and suggest that one look for other apps."