In the first place, we are talking about size, so obviously that is mainly the only difference. Now, depending on the model, we might see that we get fewer features with a portable bow press, while a full-size one can allow us to make any changes or repairs to our crossbow or compound bow. Also, even though most people don’t think the same, the safety risk while using a portable bow press is higher as the environment is not always suitable for any changes and the bow press is not bench mounted. Aside from this, everything else is pretty much the same – with some bits and bobs missing.