Mobile data is pricier in developing regions than in the west, a paradox that has held back mobile internet adoption on most of the planet. To help, Opera has unveiled App Pass, a service that lets smartphone users download and use apps without paying for data. It comes as part of Opera Max, an Android app that cuts mobile data usage by compressing it up to 50 percent. App Pass is targeted at emerging markets, and will let operators offer "free, sponsored or low-cost access to select apps." Users can then download and use them without paying for data over the duration of the pass.