I've created a simple Mac app that gives you statistics on your working behavior over time. For example, your average words per minute, what language you are typing in, usage of the delete key, etc. Interesting stuff! However, some test users have said they wouldn't use the app if they didn't know me personally, since it collects keystrokes like a keylogger.
Is there some certification I can get to show that I'm not doing anything nefarious? (I never keep more than one word in memory!) Or will it be enough to have my app signed? Or open-source that part of the code? (Other parts I know I cannot make open source.)
I would think that Gatekeeper would be adequate for most users. If it turns out an app is doing bad things, then Apple could pull the plug on a malware developer. So that and maybe some time live should establish your program as 'safe' to those who are not technically inclined (e.g. cannot understand your source).
Simply distributing it in your or your company's name can do a lot to build trust in an app (provided of course your other products/programs have not violated users' trust).