Yes, absolutely. We recommend that you test the streaming with the test stream below from the device you intent to use before purchasing a pay-per-view event.
The stream should autoplay smoothly in your browser if which case you're good to go. If you want to test the stream in the mobile app, this link will take you you to the test stream in the app, if you have the app installed already, or to App Store / Google Play otherwise.
You can use the stream above to also test the various stream qualities (HD / SD) and the streaming to Chromecast and Apple TV devices.