PhoneAsPrompter
Use your phone as a free teleprompter and clicker, which can connect to PowerPoint.
Step one:
Your phone and your computer should be in the same network.
Step two: Start Pc-Side application, click "File"--"Open" to open a PowerPoint file.
Step three: Scan the QRCode with your phone, and open the website in browser on your phone.
Then, the webpage will show the notes of the current slide, and you can navigate between slides on the web page by swipping your figure left and right.