I like that it's easy to use because you only need basic knowledge about how this program works in order understand what needs doing next with your own house plans/drawings etc., It also has some good features such as being able to add multiple contractors which makes things easier when adding new people onto jobsites at short notice without having too many different apps open up (which would be confusing).
However there are still problems where if something goes wrong then sometimes they don't respond very well unless someone contacts them via email first before replying back! They could do more work by making sure everyone knows exactly who does each job so no confusion arises between sub tradesmen working together eleswhere else but not under BTS' control - i think all subcontractors should have an assigned contact person within buildtools otherwise its hard to keep track of everything going forward especially during changesover times!! So far we've been happy enough just knowing our subs will get.