Just amazing. Like, wow.

5-star app - works fastest if instead of using your mail Google calendar as yout default app, you instead use the iPhone local calendar, set it to sync with Google Calendar through Exchange in iOS settings, and then configure Calengoo to show your local Canendar and hide your Google Calendar --- that way its always silently updated in the background. Further, the events show up in iOSs notification centre this way, including on the lock screen if you wish.

IOS 7 - Still works great. Better than GCals own interface. Totally worth the $ and then some. Awesome app!

Easily worth 15 times what I paid for it, and thats even without the developer responding quickly to emails, which he did the one occasion I had time to email him.

Great guy. Above-average-inspired app developer.

Christoph Dollis about CalenGoo Calendar, v1.5.24