BlueTardis

Look up Vinegar for iOS and install

Been using it for some years now

Sounds like the gain is way different on your input.

Too high will cause increased levels of distortion

This is how you get 40k Orks

The computer reboots 16 times when you plug it in.

If you don’t mind trying something different then give the GameBall trackball a go.

It has a lot of features and smarts that are controlled via the firmware within the unit (and as such doesn’t require extra software). Plenty you can do with extra software (same as any other device but it works well with generic)