Hey! I understand your apprehension. I would prefer that screen not show up on Windows. MiniMeters is code-signed with an OV certificate and if you click "More info" in that window you will see my personal information that verifies that it is coming from me and not somehow tampered with. If you see that info it should be safe.
Microsoft claims that if enough people download an application that screen will disappear but it appears that the only way I can remove it is by switching certificate types. I will do that in the near future, but it requires me to spend quite a bit of money so I have been putting it off. Sorry about the inconvenience.