I've searched this forum extensively, and whilst there's lots of similar questions, I've been unable to find a solution that works.
I've been using Krpano to create virtual tours, with .mp3 audio files attached, for visitor attractions. At some of the visitor attractions, there is no mobile phone signal, so what I'd like to do is to let users download the tour over Wi-Fi before they set off.
I tried downloading files to the browser cache using the manifest method, but then realised that it's been deprecated. I've tried setting up a service worker to download files to the cache, but couldn't get that working. I've hunted for, and installed many website downloader Apps, but none work. I don't want to have users downloading a .APK, and anyhow, I'd need something else for iPhones.
Can anyone recommend a simple way of achieving what I'm trying to do?