# Gravity > A minimal notes app with one list: append, review, and rescue what still matters. Gravity is a notes app built on Andrej Karpathy's append-and-review method. You write everything into one list, new notes go on top, older notes sink, and you swipe to bring back anything that still matters. There are no folders, you don't need an account to write, and a tag is just a word and a colon at the start of a note. You can type or speak a note. ## Facts - Platforms: iPhone, iPad, Mac, Android - Price: $9.99 per platform for the app, with no ads or in-app purchases. The app is $9.99 per platform. iCloud sync between iPhone, iPad and Mac is free, and Gravity Sync, which adds Android and your AI apps, is free during the beta and becomes a subscription after it. - Rating: 4.8 out of 5 from 37 App Store ratings - Storage: notes stay on your device. Optional iCloud sync between iPhone, iPad and Mac; optional Gravity Sync (Beta, free during the beta) across iPhone, iPad, Mac and Android; daily folder backups on Android; JSON export and import on every platform - Made by Tristan Manchester, a solo developer in Germany - Contact: tristan@crowlabs.co - Store listing: https://apps.apple.com/app/id6756236079 - Store listing: https://apps.apple.com/app/id6757930875 - Store listing: https://play.google.com/store/apps/details?id=com.gravitynotes.app ## For developers and agents - [Gravity API docs](https://www.gravitynotes.app/developers.md): The MCP server and the command-line tool, how to sign in, limits and discovery files - [Gravity MCP server](https://www.gravitynotes.app/mcp.md): https://mcp.gravitynotes.app/mcp, its tools, OAuth scopes and protocol versions. Free with Gravity Sync - [auth.md](https://www.gravitynotes.app/auth.md): How an agent registers and gets a token for a person's notes - On a Mac, the `gravity` command-line tool lets scripts and AI agents read and write your Gravity notes. Install it with `brew install tristanmanchester/tap/gravity-cli`. - Agents: run `gravity agent` to print a guide for using it. - Agent skill: https://www.gravitynotes.app/.well-known/agent-skills/gravity/SKILL.md ## Start here - [Home](https://www.gravitynotes.app/index.md): What Gravity is and how it works - [About](https://www.gravitynotes.app/about.md): Who makes Gravity and why - [Gravity Sync](https://www.gravitynotes.app/sync.md): The Gravity Sync beta, which keeps one list in step across iPhone, iPad, Android and Mac - [Import notes](https://www.gravitynotes.app/import.md): Convert CSV or Markdown notes into a Gravity import file in the browser - [Changelog](https://www.gravitynotes.app/changelog.md): Release notes for iPhone, iPad, Android, Mac, the command-line tool and the MCP server for AI apps, newest first ## Guides - [Karpathy's append-and-review note: what it is and how to use it](https://www.gravitynotes.app/append-and-review.md): How Andrej Karpathy takes notes: one Apple Note, new lines at the top, and a regular review that rescues what still matters. His examples and how to start. - [Apple Notes for Android: one list of notes on iPhone, Mac and Android](https://www.gravitynotes.app/apple-notes-for-android.md): Apple has no Notes app for Android. You can open iCloud notes in a phone browser, or keep one list of notes on iPhone and Android with Gravity Sync, free in beta. - [Connect Gravity to Claude, ChatGPT, Codex, and Grok](https://www.gravitynotes.app/connect-ai-apps.md): Add Gravity to Claude, ChatGPT, Codex, or Grok Bot so they can save notes to your list, find what you wrote, and rescue old notes. Comes with Gravity Sync. - [Gravity API and developer docs](https://www.gravitynotes.app/developers.md): Reach Gravity notes from code. The Gravity API is an MCP server with OAuth sign-in, plus a command-line tool for the Mac. Free, self-serve, no API keys. - [A quick capture notes app with fast search](https://www.gravitynotes.app/fast-notes-search.md): Gravity is a quick capture notes app: type and press Return twice to save, then find any note with instant offline search. Every way in, and how search works. - [Gravity vs Apple Notes](https://www.gravitynotes.app/gravity-vs-apple-notes.md): Gravity and Apple Notes compared on capture speed, organising, sync, Android, voice and price, with a plain answer on who should pick which. - [Gravity vs Drafts](https://www.gravitynotes.app/gravity-vs-drafts.md): Gravity and Drafts both open ready to type. How they differ on what happens after capture, automation, Android, sync and price, and who should pick which. - [A local-first notes app that works offline](https://www.gravitynotes.app/local-first-notes-app.md): Gravity keeps every note on your device in one newest-first list. Writing, search and review work offline; sync across iPhone, Mac and Android only if you want. - [Gravity MCP server](https://www.gravitynotes.app/mcp.md): Reference for the Gravity MCP server at mcp.gravitynotes.app/mcp. Its 14 tools, OAuth sign-in, protocol versions and limits, for developers and AI agents. - [A minimal notes app with one list and no folders](https://www.gravitynotes.app/minimal-notes-app.md): Gravity is a minimalist notes app: one list, no folders, nothing to set up. New notes land on top and old ones sink. What I left out on purpose, and why. - [A notes app your AI agents can read and write](https://www.gravitynotes.app/notes-app-for-ai-agents.md): Gravity's command-line tool lets AI agents and scripts read, search, and add to your notes on a Mac. How to install it, what it can do, and how it keeps your notes safe. - [Gravity for Mac: a notes app in your menu bar](https://www.gravitynotes.app/notes-app-for-mac.md): Gravity is a notes app that lives in your Mac's menu bar. Press Option-Space in any app, type and press Return twice. One list, offline search, synced to your iPhone. - [A notes app for writers who collect fragments](https://www.gravitynotes.app/notes-app-for-writers.md): A notes app for writers: catch lines, overheard dialogue and half-ideas in one list, then review and rescue the ones that belong in what you're writing now. - [A notes app without a subscription](https://www.gravitynotes.app/notes-app-no-subscription.md): Gravity is a notes app you buy for $9.99, with no ads or premium tier. iCloud sync is free, and Gravity Sync is optional. How it compares with Bear and Notion. - [A private notes app that keeps your notes on your device](https://www.gravitynotes.app/private-notes-app.md): Gravity keeps your notes on your device, with no ads and no account needed to write. Where notes are stored, how sync works and exactly who can see them. ## How-to guides - [All guides](https://www.gravitynotes.app/guides.md): How-tos and notes app comparisons - [Obsidian Alternatives With Less Setup (6 Apps Compared)](https://www.gravitynotes.app/guides/obsidian-alternative.md): Six Obsidian alternatives compared on setup, storage and price: Logseq, Notion, Bear, Capacities, Heptabase and Gravity, with who each one suits and what you give up. - [How to Take Notes on a Book While You Read](https://www.gravitynotes.app/guides/how-to-take-notes-on-a-book.md): How to take notes on a book: choose where notes live, mark only passages worth returning to, write a short response in your own words with a page reference, and review into a commonplace book. - [Apple Notes Alternatives: 6 Apps Compared](https://www.gravitynotes.app/guides/apple-notes-alternative.md): Six Apple Notes alternatives compared: Bear, Drafts, Obsidian, Standard Notes, Notesnook and Gravity. What each is best at, how it handles sync and privacy, and what it costs. - [Best Note-Taking Apps for Mac: 6 Compared](https://www.gravitynotes.app/guides/best-note-taking-app-for-mac.md): The best note-taking apps for Mac compared by what you write: Apple Notes, Bear, Obsidian, Notion, Drafts and Gravity. Prices, sync and quick-capture shortcuts, plus how to test an app with your own notes. - [Quick Notes on iPhone: How to Set Up and Use Them](https://www.gravitynotes.app/guides/quick-notes-iphone.md): How to set up Quick Notes on iPhone: add the Control Centre button, assign it to the Action button, save Safari pages from the share sheet, and find your notes in Apple Notes. - [Sticky Notes on Mac: How to Use Stickies](https://www.gravitynotes.app/guides/sticky-notes-mac.md): How to use Stickies on a Mac, from making and arranging notes to keeping one on top, plus Quick Note, desktop widgets and a capture shortcut for passing thoughts. - [How to Do a Brain Dump: A Simple 5-Step Method](https://www.gravitynotes.app/guides/brain-dump.md): How to do a brain dump in five steps: pick one place, set a 10 to 15 minute timer, write without sorting, then sort the list into actions, parked worries, ideas and things to drop. - [Interstitial journaling: a real day of entries, a template and an app](https://www.gravitynotes.app/guides/interstitial-journaling-field-notes-system.md): Interstitial journaling means writing the time and a line at every task switch. An example day, a template, ADHD tips, and the app I built for it. ## Blog - [How I took Gravity's search from 0% to 99%](https://www.gravitynotes.app/blog/gravity-search-0-to-198.md): How I rebuilt Gravity's notes search with a 200-case eval. It found 0 of 200 notes before and finds 198 now, with the same typing speed, a 17 MB embedding model and one search contract for iPhone, Android, Mac, the CLI and Claude. - [Save notes from Claude and ChatGPT to your Gravity list](https://www.gravitynotes.app/blog/save-notes-from-claude-and-chatgpt.md): Gravity now works inside Claude, ChatGPT, Codex, and Grok. Save a note from any conversation, ask what you wrote last month, tick off a checklist line, or rescue an old idea. It all lands in the same list on your phone and Mac. - [How Gravity Sync keeps both versions of your note](https://www.gravitynotes.app/blog/how-gravity-sync-keeps-both-versions.md): How Gravity Sync merges notes across iPhone, Android and Mac without losing text. One SQLite database per library, operations instead of states, receipts for retries, and a test suite that tries to break it. - [Record every thought](https://www.gravitynotes.app/blog/record-every-thought.md): Productivity advice says capture only what matters, but you can't tell what matters as the thought arrives. Why I record everything and let review sort it out. - [Why most note-taking apps don't work for ADHD](https://www.gravitynotes.app/blog/why-most-note-taking-apps-dont-work-for-adhd.md): Folders and tags ask for the executive function ADHD makes hardest. What an ADHD-friendly notes app needs, and a two-minute capture-and-review routine to try. - [Attention is the only organisation system that works](https://www.gravitynotes.app/blog/attention-is-the-only-organization-system-that-works.md): Folders and tags ask you to predict how you'll look for a note. Attention sorts notes when you know more. How a daily scroll-and-rescue keeps notes organised. - [Your brain wasn't built to remember everything](https://www.gravitynotes.app/blog/your-brain-wasnt-built-to-remember-everything.md): Working memory holds about four things at once. Why writing thoughts down is mostly about clearing your head, and why it helps to let old notes sink from view. - [The psychology of sinking: why forgetting is a feature](https://www.gravitynotes.app/blog/the-psychology-of-sinking-why-forgetting-is-a-feature.md): Ebbinghaus's forgetting curve, the Zeigarnik effect and why letting old notes sink out of view can help you think. The psychology behind Gravity's design. - [Prefixes: a tiny system that works](https://www.gravitynotes.app/blog/prefixes-a-tiny-system-that-works.md): Start a note with todo: or read: and you can filter your notes without folders or a tag manager. How I use four prefixes, and when to stop adding more. - [No, we're not adding folders](https://www.gravitynotes.app/blog/no-were-not-adding-folders.md): People ask me for folders, tags, links, templates and an API in Gravity. Why I keep saying no, what each would cost you, and who Gravity is built for. - [Why your notes app is backwards (and why I built Gravity)](https://www.gravitynotes.app/blog/why-gravity-exists.md): Why I built Gravity: notes apps make you file every thought before you've written it. What changed my mind, why letting old notes sink works, and what Gravity does about it. ## Machine-readable - [Full content](https://www.gravitynotes.app/llms-full.txt): Every page above as Markdown in one file - [AI usage policy](https://www.gravitynotes.app/ai.txt): How AI systems may use and cite this site - [Sitemap](https://www.gravitynotes.app/sitemap.xml) - [Agent resources](https://www.gravitynotes.app/.well-known/ard.json): ARD manifest listing the Gravity CLI skill and the MCP server - [API catalog](https://www.gravitynotes.app/.well-known/api-catalog): RFC 9727 Linkset for the Gravity MCP server - [MCP Server Card](https://mcp.gravitynotes.app/mcp/server-card) ## Optional - [Contact](https://www.gravitynotes.app/contact.md): Support, feedback and press - [Privacy policy](https://www.gravitynotes.app/privacy-policy.md) - [Terms and conditions](https://www.gravitynotes.app/terms-and-conditions.md)