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I see people mentioning Fakespot, I also recommend ReviewMeta and use it often: https://reviewmeta.com/

IMHO, they're too positive. If you scroll down, there's a lot of negative factors, but the above the fold summary is quite cheerful.

The FakeSpot page is much clearer.

The odd thing is that FakeSpot's "adjusted rating" is... the same as the actual rating.

ReviewMeta's is also the same, within the granularity of half a "star".

The UI isn't perfect, but the overall grade is fail even above the fold, which almost always means I won't buy the product.