Ross Gardiner
Janky experience of using audioguide at Topkapı. Very hard to download the audio segments, mistakes in editing of English audio, unclear ordering, weird UX. The content is pretty good though. My recommendations: make the audio tour available by default. It's free with the ticket and of no use to anyone else. Second, have a human actually try the experience of being a tourist and using the app for an audio tour. You'll find all the weird problems in a single day.
S D
The tried to get everything to the app instead of the headphone device. The app needs to be online at all times and switches on only once per attraction. It's patchy and inconsistent. Mars the experience of great monuments to a large extent.
Luc Jacobs
Great idea, would be 5* if it worked offline. In some places like Göreme open air museum there was no 4G reception inside, so the app was useless. Also selecting audio guide manually without having a QR code would be useful.