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Affiliate links · Last verified 2026-05-21 · 🌍 Outside the US? Amazon and eBay will redirect you to your country's local store automatically.
The Pitch on Shark Tank
MinusCal appeared on Shark Tank (Season 11, Episode 2) in 2019. No deal.
Frequently Asked Questions
Is MinusCal still in business?
MinusCal is still listed on Amazon and eBay — see the buy links below for the latest availability.
Who founded MinusCal?
Founder details aren't publicly documented for MinusCal.
Did MinusCal get a deal on Shark Tank?
MinusCal pitched on Shark Tank but didn't strike a deal: No deal.
Where can I buy MinusCal?
MinusCal is available on Amazon and eBay. We compare current prices across both at our /results page — link below.
Related from Shark Tank
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