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Why am I sleeping poorly? Check my journal and the podcast I saved on sleep
+ 12 online sources
Chat with your knowledge
Alcohol and your sleep
Podcast
My Daily Sleep Journals
Note
Why We Sleep
Book
Intro to Large Language Models
YouTube
Interstellar 2014
Movie
Founder Mode
Blog
Attention is all you need
Atomic Habits
Book
Save anything in one click. We’ll take care of the rest
Organized. Summarized. Connected.
Science of Dreams
Book
Podcast
Blog
Book
Daily Sleep Journals
Blog
2026 Fitness Goals
Blog
Product Hunt Checklist
Blog
Blue Zone Communities
Wikipedia
Why We Sleep
Book
Organization
Effortlessly organized
Your knowledge organizes itself with smart tags that get smarter over time.
Technology
Sam Altman · Lex Fridman
YouTube
The Verge AI Brain Fry
Article
CLI Programmers
YouTube
4:48 / 2:23:56
Sam Altman · Lex Fridman
YouTube
Concise Summary
2H OF CONTENT IN 30 SECONDS
SUMMARISE
Summarization
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AUGMENTED BROWSING
Everything you save connects to everything you already know.
Recall automatically links related ideas across all your content & resurfaces them as you browse
As evening approaches, decreasing light levels signal the suprachiasmatic nucleus to activate the pineal gland. The gland responds by synthesising melatonin, a hormone that lowers core body temperature and promotes drowsiness. Blood levels typically peak between 2 and 4 a.m. before tapering off toward dawn.
Exposure to bright artificial light -- particularly the blue wavelengths emitted by screens -- can delay this process by hours, which is why sleep researchers recommend dimming devices well before bedtime.
3 related saves for “melatonin”
EXPLORE CONNECTIONS
Why We Sleep
The Optimal Morning Routine - Andrew Huberman
Alcohol and your sleep
Master your Sleep
Podcast
Science of Dreams
Book
Circadian Rhythm
Wikipedia
Blue Light & Sleep Quality
Article
AI QUIZZES
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Automated quizzes on a personalized spaced repetition schedule.
USER REVIEWS
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“I run two parallel careers, which means staying current across rapidly evolving topics. Recall is the front door to my entire knowledge workflow.”
Fernand
Head of Technology
“Recall has revolutionized how I manage information! As a power user, its AI-driven summarization and storage capabilities have boosted my productivity tenfold, allowing me to effortlessly access and recall key details whenever I need them.”
William Peltier
Senior Director at Moody's
“I use Recall on a daily basis to cultivate and build a hand-picked database of information. The end result is like having a personalized AI loaded with sources pre-screened for quality.”
Roses
Human Rights Worker
“I use Recall every day. It helps me quickly condense important information from thought leadership articles and educational YouTube videos. It's great to have a place where I can easily store this information knowing that I will come back to it again in the future. I've greatly developed as a founder and leader thanks to Recall.”
Jason Patel
Co-founder at Open Forge AI
“Recall has become an essential part of how I learn, think, and explore the world.”
Maire
Student, Data Analyst
“Recall completely changed how I prepare for exams. I save lectures, articles, and study materials, and the AI summaries help me review everything in a fraction of the time. The spaced repetition feature is a game-changer for long-term retention.”
Sofia Martinez
Graduate Student at Stanford
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One app to save, understand, and chat with everything you know.
01
Save & Understand
One click to save from your browser or phone.
Instant summaries you can read or listen to in a voice you clone.
Highlight and take notes with a rich text editor.
02
Organized and connected
Every piece of content is organized for you with tags.
Automatic connections that resurface as you browse.
Visualize your knowledge in a graph to see how it all connects.
03
Pick your context, pick your model
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04
Retain it, Prove it
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Spaced repetition Retain what you learn with smart scheduling.