Travede has a neat audio guide app, see their explainer video.
A guide4me explainer Video
Tales and tours offers Android and iPhone apps for city audio tours, watch their explainer video here, and head over
Our partner from izi.travel have created a series of explainer videos how to use their platform to publish an audio
Have a look at the explainer video from GuideMore, and if you like it, download their audio guide app here.