The aligners manufactured for all plans are the same and hence, work the same way. The difference lies in the
treatment time,
degree of correction that can be achieved
price.
For Invisalign Anterior plan, it can only treat a limited range of malocclusion cases such as
crooked front teeth
small gaps between teeth
mild overcrowding
slight relapse after previous orthodontic treatment (post-braces relapse)
With simpler teeth movement, the time taken to complete the case will be shorter and the price will be lower.