That depends on what is in them. These are, apparently, local brands since information about them is difficult to find on the web. Some of these products are sold at a premium price and do little more then other, much less expensive, lawn foods.

I am not sure about the Stimulate - but if your experience with Microlife is like mine (great) you won't need anything else.

Neither one sounds like a fertilizer. What are they?

Have you read the Organic Lawn Care FAQ in the FAQ section of the GW Organic Gardening forum?

I want to use Microlife. However, am concerned with it being 100% organic, and free of any hazardous chemicals, metals, pharmaceuticals? Does anyone know if it has been tested?

MicroLife fertilizers are made by a company in Texas and are said, by the company, to be all organic. I have not found the OMRI seal for them, however.
If you have a soil depleted of organic matter these may help, if you apply enough to get the humus levels up to where they should be. If you have adequate levels of organic matter in your soils this product will not do much for your lawn.
The only thing I have found about Stimulate is bottles of liquid available for sale. If your soil has adequate levels of organic matter this product will not be needed and if your soil does not have adequate levels of organic matter it may not do much of anything.