Does TextExpander touch have the same functionality as TextExpander for the Mac?
With TextExpander touch, you can access your snippets in any app using the TextExpander custom keyboard. This is similar to how TextExpander functions on the Mac, though the custom keyboard is required for use in most apps.
Go here to setup TextExpander to work with supported apps.
Not all the same macros work in TextExpander touch as in TextExpander for desktop. Find a list of supported macros in What other special codes can be used in TextExpander touch snippets?