SAN FRANCISCO--(BUSINESS WIRE)--wRipple (www.mywripple.com), the first app for on-demand socially driven deals and discounts, today officially launched in San Francisco. The new app allows consumers to share deals that they receive from a merchant with their friends on social media. This sharing or “viral marketing effect” further allows consumers to receive a discount on-demand without any coupons, daily deals, waiting for a sale, or earning points. wRipple has partnered with numerous local me