In addition to what Loren said, Roll20 also has issues with Touch-screens. A quick code-fix solution has been suggested to Roll20, but there was no Official response from Roll20 on this: <a href="https://app.roll20.net/forum/post/8372158/handling-devices-with-stylus-and-touchscreens" rel="nofollow">https://app.roll20.net/forum/post/8372158/handling-devices-with-stylus-and-touchscreens</a> More threads about issues on touch screen devices: (dozens of users asking, many of them unanswered, some offer third-party hacks and workarounds, or methods to configure browser settings to improve touch performance yourself), <a href="https://app.roll20.net/forum/search?q=touch%20screen&c=" rel="nofollow">https://app.roll20.net/forum/search?q=touch%20screen&c=</a>