Utterly uselss on my Samsung Galaxy S4. Have tried everything I can think of to get it to work but it won't. GPS is enabled but half the time it thinks I'm in Brazil when I'm in Spain. Doesn't make much difference where I point the device  I mainly get the same map. The horizon is nowhere near where it should be. Makes no difference whether the device is in portrait or landscape. Hopelessly inaccurate. Deleted from device.
August 13 2016