Easy to use; not too complex - it's basic functionality makes sense as far I like how easy you can make customizations or add-ons that are needed in certain situations (like when subcontractors don't list their names). If your project has unique specifications/requirements then these features may be more difficult than they should really need being an entry level software solution but overall this was very user friendly! My main dislike with SPSE is its UI isn’t great at all if using via mobile devices so there might end up problems accessing information during fieldwork which could result into additional work hours spent looking through old notes etc.