TD Ameritrade vs. Devenir?

Anyone have thoughts on TD Ameritrade vs. Devenir? My fiancee’s HSA has these two options for platforms to invest through. It appears that Devenir offers a limited list of funds but there are some index/target date index funds available.

I am more asking for the community’s opinion on how user friendly each platform is or what their experiences are using each service.

Any thoughts are greatly appreciated!