Heyday
AI Copilot for your own research, notes/docs & conversations
LilysAI
Don’t miss the sources that change your performance
Updated February 2026
| Heyday | LilysAI | |
|---|---|---|
| Rating | 4.8★ | 5.0★ |
| Reviews | 16 | 20 |
| Pros | 14 | 23 |
| FactScore™ | 58.4 | 66.1 |
FactScore™ Comparison
FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.
Pros & Cons
Only in Heyday — Pros
Productivity enhancement Automatic content organization User-friendly Easy to use Browsing history resurfacing Intelligent note-taking Queryable database Shareable content AI writing assistant Content summarization Meeting preparation Personal AI assistant Seamless integrationBoth tools — Pros
User-friendly interfaceOnly in LilysAI — Pros
Video summarization Sophisticated summaries Time-saving Content organization Educational tool Mind map generation Fast performance Korean language support Multi-language support PDF summarization Structured notes Audio summarization High readability AI-powered chat Content creation Free tier Various output formats Voice transcription Website summarization Export options Global accessibility Real-time meeting summariesOnly in Heyday — Cons
Login issues Persistent screen presence Price Stagnant search interfaceBoth tools — Cons
—Only in LilysAI — Cons
—Details
| Heyday | LilysAI | |
|---|---|---|
| Categories | Note and writing apps, Knowledge base software, Data analysis tools, Writing assistants | Note and writing apps |
| Platforms | Web | Web |
| Became Popular | April 4, 2022 | May 15, 2025 |
| Website | heyday.xyz | lilys.ai |
Who Should Pick Which?
Choose Heyday if...
- Productivity enhancement
- Automatic content organization
- User-friendly
Choose LilysAI if...
- Video summarization
- Sophisticated summaries
- Time-saving
With a FactScore™ of 58.4 vs 66.1, LilysAI leads in community reception. Heyday uniquely offers Productivity enhancement and Automatic content organization, while LilysAI stands out for Video summarization and Sophisticated summaries.
What Users Say
Heyday
I used Heyday for months. The team doesn't seem to care about product feedback and the search interface has stagnated and extension has become more annoying (highlighting keywords). I love the idea...
I really liked using the product, which has been super handy in organizing thoughts and insights from the clickholes I tend to get in every day. I'm hoping this keeps my multitude of tabs at bay.
Heyday has been a lifesaver. It automatically saves everything I browse and brings up relevant information right when I need it.
LilysAI
사용자로서 LilysAI는 다양한 형식의 콘텐츠를 신속하고 정확하게 요약하는 인공지능 기반의 생산성 도구로, 학습, 업무, 콘텐츠 제작 등 여러 분야에서 유용하게 활용하고 있습니다. LilysAI를 사용하며 다른 이...
Efficient, intuitive, and incredibly helpful! LilysAI has saved me so much time by helping me quickly understand long or complex texts. The summaries are clear and accurate, making reading and revi...
I've found this service incredibly useful, especially when I need quick summaries of YouTube content during work. When I'm pressed for time and need to check specific information fast, I simply sta...
Related Comparisons
Frequently Asked Questions
Which is better, Heyday or LilysAI?
Based on FactScore™, LilysAI leads with a score of 66.1 vs 58.4. LilysAI has a higher rating of 5.0★ compared to 4.8★.
What are the pros of Heyday compared to LilysAI?
Heyday uniquely offers: Productivity enhancement, Automatic content organization, User-friendly, Easy to use, Browsing history resurfacing.
What are the pros of LilysAI compared to Heyday?
LilysAI uniquely offers: Video summarization, Sophisticated summaries, Time-saving, Content organization, Educational tool.
Is Heyday better rated than LilysAI?
Heyday is rated 4.8★ from 16 reviews. LilysAI is rated 5.0★ from 20 reviews.
What is the FactScore™ of Heyday and LilysAI?
FactScore™ weighs rating and review volume together. Heyday scores 58.4 and LilysAI scores 66.1.
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