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Building a cross-platform clipboard sync with zero server costs — is it possible?

Hey everyone! I m launching ClipFlow in 11 hours. It's a cross-platform shared clipboard tool built for developers and power users who care about data privacy.
When architecting it, I wanted to solve two big problems: avoid third-party servers touching sensitive clipboard data, and avoid huge infrastructure costs for myself as a solo indie developer.
The solution? ClipFlow creates a secure personal network using the user s own Google Firebase config, completely encrypted client-side with a single shared password. Zero database load on my side, 100% data control on the user's side.
Would love to hear your thoughts on this architecture approach! See you at midnight PT!

ClipFlow - Secure, private clipboard sync between PC and mobile

I got tired of texting links and code snippets to myself just to open them on another device. Third-party cloud clipboards often leak data, so I built ClipFlow. It’s a secure, cross-platform tool that instantly syncs your clipboard between PC and mobile devices. It runs entirely on your own personal Google Firebase infrastructure, meaning your data never touches any third-party servers. 100% private, zero-knowledge architecture, and absolutely no limits on the number of active devices.