Hi, thank you for your recognition, basic krpano excellent performance, our player can be encapsulated in Android and Apple apps, and made some related optimization, subtitles in the player's subtitle VR mode can adapt to most mobile phones, it is recommended that you try to choose VR headset which can adjust the pupil distance to achieve the best display effect.
You can reflect the relevant effect in our case page: 
Hi, In order to make it easier for you to publish panoramic video works, we have developed a panoramic video player plugin based on excellent krpano player engine. You can easily use the player for the release of general panoramic video or 3D VR (360/180 degree) panoramic video. The player plugin can also be adapted to PC web page, mobile web page publishing and app (ios/android) encapsulated applications. Of course, you can quickly add VR subtitles for each video.
We hope you can enjoy it. 
Please note that a basic official krpano license is needed, in order to use this player function properly.
View Player Introduction on the krpano Plug-in Page:)
Our website: video360player.com
After upgraded to ios12.2, I found that it must use https protocol in safari or other browers, nor the gyro can't not be working.
