yallo is Sunrise's second brand and runs on the same Sunrise network. Sunrise positions itself as premium with broad roaming, yallo as the cheaper, app-based alternative with aggressive promo prices.
yallo is cheaper and uses the same network, but watch two things: the Black roaming plans tie you in for 24 months, and yallo has one of the weakest customer ratings in the market (Peer Score at the bottom). Sunrise offers more service and the broadest roaming, but is expensive and also raising prices in 2026. Anyone who just wants the Sunrise network cheaply often finds a better price/flexibility mix with Digital Republic or swype.