When it comes down to choosing between Skype, and Google Voice, or something else, it depends on your business needs. While Google Voice and Skype offer great features for personal use, the costs can add up when attempting to use either software for business use. Ring4 on the other hand gives you many if not all of the same features of Google Voice and Skype combined for one low flat rate, as low as $8 per number per month, when billed annually.