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Sergey Sereda
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qalc.ai
The tracker-free calculation hub. Built for privacy.
$0/mo
Recent activity
Feb 13, 2026
commented on a post
How I built a private, offline-first hub with 3,000+ tools for DeFi and Engineering
Jan 24, 2026
created a post
How I built a private, offline-first hub with 3,000+ tools for DeFi and Engineering
