Heyday
AI memory and research assistant. Resurfaces pages, highlights, and notes while browsing; saves context, recalls sources, generates summaries.
At a glance
- Type
- Browser-based research memory
- Tier
- T2
- Created
- 2022-06
- Latest release
- not applicable — not OSS
- License
- not applicable — not OSS
- GitHub
- not applicable — no GitHub repo
- Pricing
- $19/mo (monthly) or $179/yr (annual) — browser extension AI research assistant
- Funding
- $6M total Seed · 2022-06
Taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- long-term
- update
- append-only
- unit
- document
- governance
- user-controllable
- conflict
- none
When to use
Optimised for: personal-knowledge-management UX + AI-augmented note-taking
Anti-fit: not for enterprise / programmatic use; not for compliance-regulated workloads
Pros & cons
Pros
Browser-extension memory that auto-resurfaces relevant pages while you browse — proactive recall.
Cons
Browser-tied; smaller user base; surfacing quality depends on indexing depth.
Claims & capabilities
Originally founded 2016 in San Francisco; acquired by BetterUp on 19 September 2024 (per PitchBook). Browser-history-as-memory positioning; recorded URLs and pages visited automatically and organized by topic. Distinct from Heyday Canada (acquired by Hootsuite 2021)
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Managed-only (browser extension + cloud)
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- searched not found
- A2A
- searched not found
- OpenTelemetry
- searched not found
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Other personal ai / pkm / lifelogging memory in the catalog, ranked by inbound references.
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