There are worldwide app stores such as Apple’s App Store and Google Play, mobile marketing platforms like AdMob, or other services for them to reach audiences outside China. Fortumo, as a mobile payment solution though, drops in this category. The Estonian company has reached partnership with telecom operators in 80 countries to help app developers collect payments for one-click in-app purchases through carrier billing. What needs developers to do is embed the Fortumo SDK. Fortumo, of course, takes fees based on payments processed.