The Hulda Clark Zapper and the Bob Beck Pulser are very different devices. They use different frequencies, different currents and waveforms, and different delivery methods for getting the current into the body. Comparing them is equivalent to comparing apples to oranges.
Personally, we feel they are very complementary to each other and have used both of them extensively.
Remember, the Beck Pulser (blood electrifier) is focused primarily on the blood stream, while the Clark Zapper is focused on muscles and tissues in the body. They are both attempting to do similar things (clear parasites and pathogens from the body) but they are completely different devices.
For more info on the differences between them click here.
Posted in: Bob Beck Products