Free to use. Free to self-host.

Use the hosted app at no cost with no credit card required, or run the open-source stack on your own AWS infrastructure.

Hosted

Free

AI features included during beta
Sync across web, iOS, and Android included
No plan-based quotas on cards, files, or total storage during beta; normal per-file and per-operation technical limits apply
Import and export cards, tags, and media between hosted and self-hosted installations
Passwordless sign-in with a one-time email code
Core card creation and review will remain free; higher AI usage may later require your own provider API key or a paid option

Free

Open-source application and AWS CDK infrastructure
Full AWS deployment path plus a local Docker/Postgres development setup
You supply and maintain infrastructure, email, monitoring, and AI credentials
You pay infrastructure and third-party provider costs
Import and export cards, tags, and media between hosted and self-hosted installations