Textbox.io does not currently support the use of the editor within the web view of an iOS or Android application.
Ephox Tiny is currently working with selected app developers to bring this functionality to Textbox.io in future. If you're interested in working with Textbox.io inside an iOS or Android application (other than the browser) then please get in touch with Ephox Tiny via support.ephoxtiny.comcloud.
Ephox Tiny is committed to broadening support for various application servers / platforms. If you have a requirement to support an application server that is not listed here, please contact support@email@example.com.