There is no trial version available, but you can try running some of these samples:

• old pc build (for testing raw point performance in v1 viewer): https://discussions.unity.com/t/released-point-cloud-viewer-tools/534863/182
• webgl build: https://unitycoder.com/upload/demos/pointcloudwebgl/
• webgl point picking: https://unitycoder.com/upload/demos/pointcloudwebgl2/
• android: https://www.dropbox.com/s/lm3cqu1sipxl4au/mobilepointclouddemo.apk?dl=1

• Youtube recordings https://www.youtube.com/watch?v=r6uviWRdhpU&list=PLi5GhVWoWyw4jNbEthXixwfYWnuo49mHb