Stoodle - free, collaborative whiteboard built by 3 teens

Hi all, I'm a senior in high school and I recently co-founded Stoodle, a free, realtime whiteboard with voice chat made to help students effectively collaborate and tutor online. I built it Firebase and Twilio (we are getting discounted pricing from both). We are also incubated by the CK12 Foundation. Our press release recently was posted on CNBC and Yahoo! Finance. http://stoodle.ck12.org I would love some feedback from HN.