Frog eye leaf spot apple trees

DRedSky

hi,

I have 7 apple trees, all different varieties and most of them have frogeye leaf spot.

All were purchased from different nurseries a couple of years ago and are circa 6 feet tall.

The frog eye leaf spot is on most trees but maybe only 15-20% of the leaves.

I removed all the immature apples last year and again this year to help roots establish so i cant comment on whether fruit would be affected.

Anyway online I can find info about this fungal disease but no proper simple answer about how serious or damaging it is?

Like is it going to vastly reduce fruit yields next year onwards? Or will fruit be cosmetically affected?
or are we talking just a tolerable kind of thing where we lose a few apples and not to be worried?

Can anyone please give me a guide on what to expect and how serious an issue it is likely to be?

Im certain its NOT rust by the way. Its frog eye leaf spot. Just not sure whether to be bothered trying to do anything dramatic about it or leave it be?