I bought one when they first came out and I do like it a lot. Yeah the gearing to rotate the camera is a bit weak but it works for what I use it for (heard a rumor that they changed the parts after the first year…can’t verify though). The range it advertises is a bit optimistic. Per the Google Play Store there are only 1000ish downloads of the app to run it, so unless lots of people are using Apple products to view it I don’t think it’s a very big seller…hence I doubt if app improvement is high on their list.
Also make 100% sure the device you are intending on using it on will work with the unit…my Samsung tablet works just fine but my Samsung Note4 phone does not work with it. Why??? I have no idea.