I like that it's very easy for me as an engineer who does not have much experience in simulation software but has used other simulators before (e.g., AutoCAD) to use this one without having to learn how everything works from scratch! It also lets you export your model into different formats such as video or 3D printing so there are many options available if needed.
The only thing about iThink was its price point which can be expensive depending upon what level of complexity/detail you want out of the final product. If cost isn't really important then go ahead because they do offer discounts when purchasing multiple licenses at once. We were trying to solve problems related to manufacturing costs by creating custom parts using our own CAD files instead of relying solely on off-the-shelf products.