Sound does not play on iOS 11

[JimScott]

@Marina

Yes, I have a sound with preview and when I export the animation to a video.
But on the video it self there’s no sound

I believe the following still applies...

Exporting Video with Sound - Creating a Screencast

Tumult Hype supports exporting an MP4 video of your animation (using File > Export as Movie > Video...), but it does not currently support exporting audio. Fortunately, it's pretty quick to do this with other tools. Capturing Clicks & Interaction If you'd just like to capture a high quality video of your document in action, you may want to use something like https://getkap.co/. Screenflow is another powerful tool for capturing your screen and audio playing from a Hype document (as played from …