These work great with a good phone, not all phones are equal.
So do not blame the product, when its most likely the phone.
I have no problems using my galaxy s4 after fully updated. Before all updates, it didn't work overly great.
Blue tipz sends out a simple blue tooth signal when active, it's the phones ability( or lack of) to receive the signal, that determines how far away you can be.
I have had these since they were first released. At first, they were just "ok", but upgraded phones and updated the app, and it was noticeably better. This year, the app was updated again, and I can get some really good range now. The company keeps updating the app and it keeps getting better. As phones get better, so will the range.