Google+ Local is to be retired August 7 2013.

Now that the updated Google Maps iOS application has Google+ Local features included,  Google has made the decision to axe the Google+ Local application. The announcement was made through an email:

Google+ Local app for iOS will be retired on August 7th.

Hello,
We’re emailing to announce that the Google+ Local app for iOS will be retired on August 7th, 2013.
The good news is that all features in the Google+ Local app are now available in Google Maps for Mobile on iOS devices:
• Search by categories of places, like “restaurants” or “coffee shops”
• Read place information, including written reviews, average price, address and Street View (where available)
• See what people in your Google+ circles have to say about their favorite places around the world
• Rate and review places you’ve been to
• Share places, locations and businesses you find
Learn more about Google Maps for iOS.
This means that after August 7th, you’ll no longer be able to access the Google+ Local app through your iOS device. Any reviews and ratings that you created will be available on your Google+ profile and in the Google Maps iOS app.
Thank you for using Google+ Local for iOS.
Sincerely,
The Google Maps Team

At least Google kept the features instead of removing them suddenly.