App localization requires experience and dedication. Indeed translators who lack knowledge in app localization can soon get lost under an avalanche of terms, internal documents and new project files. The chances of getting lost under a pile of work and unfamiliar terms is even greater when translators step into a project that is almost halfway completed or that has been going on for years already. This is not only annoying for translators but for app developers, while the user experience can also be affected negatively. To avoid this problem, app developers should first focus on stability, quality and efficiency rather than merely looking at the costs of linguistic professionals. Costs are equally important but best practice for app developers is to take that into consideration only at the start of a project. This article describes seven reasons why app developers should have dedicated localization teams.