Has anyone tried this?

https://itunes.apple.com/my/app/tournament-organizer-for-x/id865051981?mt=8

The app is clean and pretty easy to use - looks like quite a bit of effort went into this.

I've run a couple scenarios with it and it holds up pretty well, but I'm wondering if anyone has come across scenarios that don't work.

I'm hoping to get the TO to use this in store championships and regionals.

Thanks everyone.