I've only been using it a few weeks and I find it quite useful. Certainly better than checking my junk mail folder in case an important email has gone astray! It seems to work fine on my phone.
Communicator is an excellent app that works really well for schools that update it regularly and create all the links correctly and for parents who check it regularly.
my son's school uses it and I really value it - it has the calendar and any special dates, lastminute information, and documents all in one place. saves you having to get clarification on things, or scour the website for things you need in a hurry at 6.30am! I find it helpful on the laptop but haven't tried it on my phone yet.
I find it useful on ipad and laptop, not so good on phone though.
My kids and most of their mates use it too (teens) as they find it gives a useful reminder of what is happening when.
It doesn't work well on my iPhone looool , the calendar is always missing! But I love it on my galaxy note. My son's school post on FB & they sent us printed letters in addition to the communicator :D
I love the gallery section. & the additional resources