There are two "stages" in PS Touch. One is the project selection user interface (which is where you start when you launch PS Touch). The other is the editing user interface (where all the editing magic happens).
PS Touch projects are self-contained, i.e., they remain in PS Touch until you export them for whatever purpose you need them for in the project selection user interface.
Say you want to export an edited PS Touch project to your Camera Roll (in iOS) or Photos/Gallery (in Android). You'd go to the project selection user interface, tap the export icon (5th icon from the upper right) > Save to Camera Roll/Gallery > select a file format > select a project > OK. You should then have your exported PS Touch project in your device's photos folder. (Remember they're separate; the actual PS Touch project stays in PS Touch. You're free to move the exported JPEG or PNG image anywhere you want.)
Thank you very much for responding. I was missing the "select a project" step. My daughter figured out for me last night.
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