MYWOWO

Mywowo is a travel app but it has some different features and this is why I decided to hunt it.
It has hundreds of audio files in YOUR LANGUAGE and you will be aware of wonders of these cities in a simple and fun way. (Washington, Verona, Venice, Tokyo, Singapore, Santorini, St. Petersburg, Rome and more)
Its contents are available even your device is offline.
You can use Gps to locate all points of interest nearby.
It has social gallery and you can share photographs in this gallery.
Quiz is available so you can understand how much you know about the cities.
It is available for both ios and Android.