Depends on the kind of apps. Japan and China are huge markets, but a western oriented app may not work there. While that same app can work when localized for Fr

Depends on the kind of apps. Japan and China are huge markets, but a western oriented app may not work there. While that same app can work when localized for France, Germany etc These are the major languages I would look at 1. Spanish 2. Portugese 3. German 4. French 5. Chinese 6. Japanese