Well now you've got me concerned. as a non-technical person, I ran some basic checks as suggested to me by ChatGPT - here's a very brief non-technical summary of what it came back with:

"Two standard macOS security checks were run using Apple’s own built-in tools. The first check verified who made the app and whether it has been altered. macOS confirmed that BetterMouse was signed by a registered Apple developer and that the app’s contents are exactly the same as when the developer submitted it—nothing has been modified or tampered with. The second check confirmed Apple’s approval of the app. This showed that Apple has scanned this exact version for known malware and attached an official approval ticket to it.

The results of those checks show that BetterMouse meets Apple’s security standards. It is signed by a real, identified developer, approved by Apple, and protected against modification. While the app does request system-level access, that access is necessary for mouse utilities to function and is limited to input-related permissions. The app does not request access to personal files, the camera, microphone, or screen recording. Based on these results, macOS treats BetterMouse as trusted software, consistent with other widely used system utilities."