Start Usage Meter 2.4.4 has been reviewed and approved by Apple and is now available on the Mac App Store.
As previously discussed, this update addresses a few minor issues that affected users on versions of OS X older than macOS 10.12. The app has been slightly overhauled to improve compatibility with OS X versions dating back to OS X 10.7 Lion. The only feature limited to OS X 10.8 Mountain Lion and later is notifications (since OS X Lion does not have a notification API).
Please note that the best experience with Start Usage Meter is always on the latest version of macOS, although I do my best to support as far back as I can. I have no immediate plans to discontinue support for OS X Lion users, since I know there are still users with machines that cannot progress past it. As long as I still have the tools (i.e. Xcode doesn’t impose a minimum target greater than OS X 10.7), I will continue to target OS X Lion and later.
I appreciate your patience while I repaired the issues aforementioned. I have a few exciting enhancements planned for future updates and will preview them shortly. Even if you’re on a newer version of macOS, you should still update to Start Usage Meter 2.4.4.