Freshly reviewed, my app Persona Calendar is now available on the HP App Catalog for your WebOS-running HP TouchPad, made especially for the Exhibition mode. (I realise this is probably targeting a very small subset of people.)
Click here from your TouchPad to view the app on the App Catalog.
More info is available from the dedicated page here: http://gm.me.uk/personacal
Feel free to tweet me with suggestions or bugs.