Enabling/Disabling sounds is very difficult on iPhone 7
Dear Chen, you should work on enabling/disabling sounds in pulldown list (and possibly test it on different devices). It took me around 10 minutes until I found a double-taping icon as a most reliable way to enable or disable particular sound. You probably should enlarge tappable space for each icon. Because currently is very hard to enable or disable sound on the first try. That’s only issue I found on this app. Now I realized that problem maybe lying in that touch is accepted only when tapped on icon’s opaque part. When you tap into transparent space, you’ll practicaly tap through the icon and nothing happens.