In general, the software is reliable and works fine. Sometimes updates introduce bugs, and then they quickly release a patch that corrects them. You can (and must!) do backup copies regularly, so in case of a serious bug you can always go back to the previous version.
In my congregation we are not using the Territories functionality, so I won't comment on that aspect.
When publishers send their hours, the secretary and his auxiliary can see who has sent their report and who hasn't yet. Group overseers see the reports of their group. Then at the end of the month you can calculate the S-1 form automatically. It saves a huge amount of time from receiving the reports through Whatsapp and then adding all the details as our secretary used to do before. He's saving some 10 hours of work every month.
Publishers use a mobile app named NW Publisher that is synced with NW Scheduler. Elders use NW Scheduler to schedule, then publishers receive the notifications in NW Publisher.
When a publisher is given any assignment, whether a talk, a demo, a prayer, chairman, reading the WT, or also audio/video, attendant, cleaning, conducting a meeting for service, cart witnessing, whatever, they receive a notification in their NW Publisher app. They can see a list of their assignments for the next weeks. Then they receive an additional notification one week and one day before the assignment. When a change is made, for example a brother cannot have a talk and another one is selected, both brothers receive a notification with the change.
I am the midweek meeting overseer and this software saves me countless hours. In the past I had to manually prepare over 120 slips a month and then send each one of them to the friends by Whatsapp. Now NW Scheduler takes care of all this automatically.
Any of the elders can create an account and pay the subscription. One month before the end of the license all the elders using NW Scheduler will receive a notification so that they can decide how to pay the next subscription.
The test version of the app is functional but limited in some aspects. For example, you can only create a reduced number of territories. It's enough to see how it works.