You will be pleased to know that XH558 for Android is currently in early development stages, I am still planning for an April / May release in time for what should be a fantastic display season! Nothing to show you just yet, but to keep up to date with the latest news and developments, please follow me on Twitter at https://twitter.com/#!/sapsApps.
The iOS version will receive an update to the Events schedule upon announcement by the VTST.
If you have any questions/suggestions please do not hesitate to contact me via Twitter or by Email: email@example.com.
XH558 App Developer