An easy swap for soy sauce is a switch to Bragg’s Liquid Soy Seasoning.
It tastes very similar to soy sauce, but is a much healthier option. It is quite strong, so use it sparingly and adjust to taste.
Why?
According to Ani Phyo, Bragg’s is gluten-free, not fermented or heated and they claim it is a living food.
A Flexitarian Journey 