Exclusively for one operating system
Native apps are developed for specific operating systems such as iOS or Android. They can be used on both mobile and desktop operating systems. What they have in common, however, is that they only run on the system for which they were programmed. This exclusivity is already indicated by the English term 'native', which translates to 'at home'.
For the development of native apps and the broadest possible market coverage, this means that a native app must be developed, maintained and maintained for each operating system.