Heyday

Verified

Type: Automation & Agents, LLM/AI models

Heyday is an AI memory assistant that indexes your browser history and connected apps. It helps researchers recall forgotten documents by overlaying past links on Google search results. However, the lack of a mobile app restricts its utility strictly to desktop environments.

Pricing: Paid

Usage category: AI Agents & Automation, Learning & Research, Personal Productivity

What is Heyday?

You spend three hours reading academic papers and Slack threads. Two weeks later, you need one specific statistic from that session. Instead of digging through messy bookmarks, you type a related query into Google. A small sidebar appears next to your search results. It shows the exact PDF and Slack message you viewed days ago.

Heyday Labs Inc. built this AI memory assistant to solve information fragmentation. It targets researchers and knowledge workers. The browser extension indexes web pages, Google Docs, and Notion workspaces. It categorizes this data without manual tagging.

Primary Use Case: Resurfacing past web research and app data alongside Google search results.
Ideal For: Academic researchers and knowledge workers managing high volumes of unstructured text.
Pricing: Starts at $19/month (paid) – A steep price for a utility extension.

Key Features and How Heyday Works

Automated Knowledge Indexing

Browser Extension: Tracks pages visited in Chrome, Brave, and Edge. It limits data collection to desktop browsers only.
App Integrations: Connects directly with Slack, Gmail, and Notion. The API limits sync speed for massive enterprise workspaces.
Document Indexing: Reads text from Google Docs and PDFs viewed in the browser. It cannot index offline files stored locally.

Contextual Recall

Search Overlay: Displays personal indexed results alongside standard Google Search outputs. It limits display space to a small right-hand sidebar.
Automatic Link Resurfacing: Shows relevant past pages as overlays on current search results. It requires exact semantic matches to trigger reliably.
Highlight Extraction: Pulls key quotes from saved web pages. It limits extraction to text, ignoring images or charts.

Privacy and Organization

Knowledge Base: Categorizes content into topics without manual input. Users cannot manually force items into specific rigid folder structures.
Privacy Controls: Allows users to blacklist specific domains. It requires manual configuration to block sensitive banking or medical sites.

Heyday Pros and Cons

Pros

Zero-effort organization categorizes content without requiring user tagging.
Direct Google Search integration allows users to find personal data without changing daily habits.
Broad ecosystem support connects popular productivity tools like Notion, Slack, and Gmail.
High-quality context matching resurfaces documents based on semantic relevance rather than exact keywords.

Cons

The $19 monthly subscription cost sits much higher than traditional bookmarking tools.
Users report noticeable performance impacts on browser speed when indexing large volumes of data.
The lack of a dedicated mobile app prevents users from capturing information on the go.

Who Should Use Heyday?

Academic Researchers: You read dozens of PDFs daily and need automatic citation tracking.
Solo Consultants: You juggle multiple client Slack channels and Google Docs simultaneously.
Budget-Conscious Students (Not Recommended): The $19 monthly fee prices out users who just need basic bookmarking.

Heyday Pricing and Plans

Heyday offers no free tier, only a 14-day free trial.

Monthly Plan: Costs $19 per month. Includes the browser extension and integrations with Slack, Gmail, and Notion.
Annual Plan: Costs $299 per year. This averages to $24.92 per month (which is strangely higher than the monthly rate).
Enterprise Plan: Custom pricing. Adds collaborative knowledge sharing and custom security deployments for teams.

How Heyday Compares to Alternatives

Similar to Rewind, Heyday acts as a passive memory tracker. Rewind records your entire screen at the operating system level. Heyday restricts its tracking entirely to the browser environment. This makes Heyday less resource-intensive but limits its scope to web-based applications.

Unlike Mem, this tool focuses on resurfacing existing content rather than creating new notes. Mem functions as a primary workspace where you type and organize thoughts. Heyday operates in the background, pushing relevant links to you while you work elsewhere.

The Verdict: Best for Desktop-Bound Researchers

Heyday delivers excellent value for professionals who spend their entire day reading inside a web browser.

Mobile-heavy users will find the desktop-only limitation frustrating.

If you need system-wide tracking across native desktop apps, Rewind provides a better alternative.

Core Capabilities

Key features that define this tool.

Browser Extension: Tracks pages visited in Chrome, Brave, and Edge. It limits data collection to desktop browsers only.
App Integrations: Connects directly with Slack, Gmail, and Notion. The API limits sync speed for massive enterprise workspaces.
Automatic Link Resurfacing: Shows relevant past pages as overlays on current search results. It requires exact semantic matches to trigger reliably.
Knowledge Base: Categorizes content into topics without manual input. Users cannot manually force items into specific rigid folder structures.
Search Overlay: Displays personal indexed results alongside standard Google Search outputs. It limits display space to a small right-hand sidebar.
Document Indexing: Reads text from Google Docs and PDFs viewed in the browser. It cannot index offline files stored locally.
Privacy Controls: Allows users to blacklist specific domains. It requires manual configuration to block sensitive banking or medical sites.
Daily Briefing: Provides a summary of recently viewed content. It limits the summary to items the AI deems relevant.
Cross-Device Sync: Syncs data across multiple desktop browsers using a single account. It offers no mobile synchronization.
Highlight Extraction: Pulls key quotes from saved web pages. It limits extraction to text, ignoring images or charts.

Pricing Plans

Monthly Plan: $19/mo – AI-powered memory assistant, browser extension, and integration with apps like Slack, Gmail, and Notion.
Annual Plan: $299/year (approx. $24.92/mo) – Full access to all features with a discounted yearly rate.
Enterprise Plan: Custom Pricing – Collaborative knowledge sharing, custom security, and deployment options for teams.

Frequently Asked Questions

Q: Is Heyday AI safe for private company data? Heyday uses encryption to protect your data and allows you to block specific domains from being tracked. However, enterprise users should review their internal compliance policies before connecting Heyday to company Slack or Gmail accounts.
Q: How does Heyday compare to Rewind or Mem? Heyday tracks activity only within your web browser. Rewind records your entire computer screen at the operating system level. Mem acts as a dedicated note-taking workspace rather than a passive background tracker.
Q: Can I use Heyday on Safari or Firefox? No. Heyday currently functions only as a browser extension for Chromium-based browsers. You must use Chrome, Brave, or Edge to run the application.
Q: Does Heyday work with offline documents? Heyday cannot index local files stored on your hard drive. It only reads documents like PDFs or Google Docs when you open them inside a supported web browser.
Q: How do I delete my data from Heyday? You can delete your account and wipe all stored data directly through the Heyday extension settings menu. The company states they remove all associated data from their servers upon account deletion.