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InstantDB is a real-time client-side database that helps developers build collaborative products like Notion or Figma.
Raised $3.4M across disclosed rounds.[7]
Seed closed August 2022, led by Y Combinator.[7]
post-money valuation is not publicly disclosed.
Named investors include Y Combinator, SV Angel.[5][7]
Joe Averbukh, Co-Founder[3]
Stepan Parunashvili, CTO[3]
Drew Harris, Founding TypeScript Engineer[3]
InstantDB is a real-time client-side database that helps developers build collaborative products like Notion or Figma.
Ask for one referenceable production customer.
Not a recommendation. The first thing this ledger cannot answer.
Supabase · supabase.com · Same buyer and same job: startup developers choosing a backend for real-time web apps. Prism founder Alex Liu explicitly compared InstantDB to Supabase, saying Supabase required manual optimistic updates and client-state sync that InstantDB removes.[5]
Firebase · firebase.google.com · Same buyer and same job: developers building real-time collaborative apps. Firebase founder James Tamplin endorsed InstantDB for building the relational queries Firebase never shipped, and TechCrunch framed Instant as harkening back to pre-Google Firebase.[5]
Convex · convex.dev · Same buyer and same job: TypeScript developers wanting a real-time backend with frontend-integrated data access and minimal backend engineering.[7]
The customer proof is company-sourced only. No independent source in this ledger confirms it.[3][5]
Ask for one referenceable production customer.
Not a recommendation. The first thing this ledger cannot answer.
Filled in the side panel for invited readers. This card carries sourced facts only.
Aug 2026
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