A new version of the app is available.
After developing the app in Qt for Symbian and Silverlight for Windows Mobile I am developing it in HTML5 for all devices!
You can try it opening this web page:
https://www.sscheduler.com/v3/ Or you can download it as app from the Windows store (this will give you a Live Tile:
https://www.microsoft.com/store/apps/9NN531W4KWW8.

It is still in developing phase, so you have only few functionality. You can report any bug, suggestion or question in the dedicated blogs or forum.