Philipp Berner

Philipp Berner

AppealSealAppealSeal
Excitable Tech Founder of 3 Startups
155 points

About

I'm a computer scientist and product builder who loves creating things that are genuinely useful and make people’s lives better. I’ve founded three companies — two of them in Silicon Valley. One is KeepSafe, a profitable and still-running consumer privacy company. During COVID, I built Work-Closer.com, a remote co-working and communications tool that was later acquired by ClickUp. Now I’m building AppealSeal to help California property owners get property tax refunds effortlessly. I’m also genuinely excited about the current AI wave and the possibilities it’s unlocking for builders and everyday users alike.

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Maker History

  • AppealSeal
    AppealSealAppeal your home's property tax in minutes to get a refund!
    Nov 2025
  • Secret Photo VaultProtects your personal space. Makes privacy & security simple. #android: https://t.co/cPChU7Sco4 ||| #iOS: https://t.co/B2zNpyzyVc
  • BLUR
    BLURObscure and expire private photos in iMessage
    Sep 2016
  • 🎉
    Joined Product HuntOctober 31st, 2014