Good notes used to mean a tidy folder and a decent memory. In 2027, the best note-taking apps do the remembering for you: they summarise long pages, answer questions from your files, resurface old ideas, and turn voice memos into action lists. Every app now claims to be "AI-powered" — but prices, privacy trade-offs and real capabilities differ wildly. We compared seven leading tools on what matters: what the AI really does, what it costs, where your notes live, and who each one suits. Prices were checked in November 2026 — always confirm at checkout.
1. Notion AI — best all-in-one workspace
Notion is the default choice when your notes already live next to your docs, databases and projects. Notion AI writes and summarises inside any page, autofills database fields, and — on the Business plan — adds a Notion Agent that searches and edits across your whole workspace, plus AI meeting notes and enterprise search.
Pricing: Free ($0), Plus $10 per member per month billed annually, Business $20 per member per month billed annually. The key detail: Free and Plus only include a limited trial of Notion AI. Full AI — Agent, AI meeting notes, enterprise search — unlocks on Business, and Custom Agents cost extra.
Pros: notes, docs and projects in one place; powerful databases; AI that works across the whole workspace. Cons: full AI is gated behind the $20 Business tier — a 10-person team pays $200 a month for it — and it feels heavy for quick notes only.
Best for: teams and solo workers who already run their work in Notion. See Notion's pricing.
2. Google NotebookLM (Gemini Notebook) — best free research notebook
NotebookLM — renamed Gemini Notebook by Google in July 2026 — works differently from every other app here. You upload your own sources (PDFs, docs, web pages, YouTube links, audio), and the AI answers questions using only those sources, with citations pointing to the exact passage. Its Studio turns sources into summaries, timelines, mind maps, flashcards, quizzes, and podcast-style Audio Overviews.
Pricing: the Standard tier is free with a Google account: 100 notebooks, up to 50 sources per notebook, and Studio outputs included, under a usage allowance that refreshes every few hours. Higher limits come through Google AI plans — Plus $4.99 a month, Pro $19.99 a month, Ultra from $99.99 a month. There is no standalone NotebookLM subscription.
Pros: free and genuinely generous; answers are grounded in your sources, so hallucination is far less of a problem; Audio Overviews are excellent for revision. Cons: not built for quick daily capture; notes are organised per notebook, not as one graph.
Best for: students, researchers and anyone who works through piles of documents. Try NotebookLM.
3. Mem — best AI-first capture
Mem is the "dump it and ask later" app. You type, dictate or clip things in, and Mem connects related notes automatically, lets you search by meaning rather than keywords, and chats with your whole workspace to answer questions from your notes. Newer versions also track tasks drawn from your notes.
Pricing: Free ($0) with 25 notes and 25 Agent messages a month; Plus $9 a month; Pro $29 a month with 100 notes and 100 messages a month, one custom routine and one connection (Gmail, Slack or Todoist); larger Pro tiers run $49–$199 a month. Every plan is metered — there is no unlimited tier any more, so check the caps before paying.
Pros: fastest capture-to-answer workflow here; no folders to maintain; voice capture and meeting briefings on paid plans. Cons: metered limits on every plan; not end-to-end encrypted; no Android app.
Best for: busy solo workers who capture constantly and want the app to organise it for them. See Mem's pricing.
4. Reflect — best private daily notes
Reflect is the calm, private option. It opens straight onto today's page, uses simple [[backlinks]] to connect notes into a visual graph, and syncs Kindle and Readwise highlights automatically. Its AI summarises notes, pulls action items from Whisper-transcribed voice memos, and fixes grammar — while every note is end-to-end encrypted on your device before it reaches Reflect's servers.
Pricing: one plan at $10 a month billed annually ($120 a year), with a 14-day free trial and unlimited notes and AI usage. Reflect has also shipped Reflect Open, a free open-source Mac app that keeps notes as local Markdown files and runs AI on a key you supply.
Pros: genuine end-to-end encryption; unlimited notes and AI on one simple price; excellent daily-notes workflow. Cons: no free tier for the cloud app; native apps focus on Mac and iOS, with web only on other platforms.
Best for: journalers, writers and researchers who want privacy first and write every day. See Reflect.
5. Microsoft OneNote with Copilot — best for Microsoft 365 households
OneNote itself is free and familiar: a digital notebook that syncs across Windows, Mac, web, iOS and Android. Copilot adds the AI layer — summaries, rewrites, task extraction and Q&A across your notes — plus Copilot Notebooks, which ground answers in up to 300 files you add.
Pricing: OneNote is free to download and use. Copilot inside OneNote comes with Microsoft 365 plans: Personal $9.99 a month (limited monthly Copilot credits), Family $12.99 a month, and Premium $19.99 a month with broader Copilot usage. A standalone Copilot Pro add-on costs $20 a month on top of a Microsoft 365 subscription.
Pros: free core app; works alongside Word, Excel and Outlook; reliable sync. Cons: the AI is a paid add-on, not built in; credit limits on cheaper plans; on Family and Premium plans only the subscription owner gets the AI features.
Best for: anyone already paying for Microsoft 365. See OneNote.
6. Evernote — best classic notes app, now with AI
Evernote is the veteran of this list, and its 2026 versions add AI search, AI-powered note cleanup and calendar tools on paid tiers, plus its web clipper and document scanning. It remains the most traditional option here: notebooks, tags, and a search that reads inside PDFs and images.
Pricing: a limited free plan (50 notes, one notebook). Personal costs $129.99 a year (about $10.83 a month billed annually) and Professional $169.99 a year, which unlocks the AI features and larger uploads. Evernote reprices often — check the figure in your account before renewing.
Pros: mature and reliable, with an excellent web clipper; works on every platform. Cons: the free plan is very limited; among the priciest options here; AI features sit on the higher tier.
Best for: long-time note collectors who want a classic, full-featured app. See Evernote.
7. Obsidian — best local-first second brain
Obsidian takes the opposite approach: your notes are plain Markdown files on your own device, linked into a knowledge graph you fully own. There is no built-in AI — free community plugins add AI chat, summarising and smart connections using a key from OpenAI, Anthropic, Google or another provider, so you control which AI sees your notes and pay only its usage cost.
Pricing: the core app is free for personal and commercial use. Optional Sync costs $4 a month (end-to-end encrypted sync) and Publish $8 a month for a public site. AI costs are whatever your chosen AI provider charges.
Pros: you own your files; huge plugin ecosystem; works fully offline. Cons: no built-in AI — you assemble the stack yourself; steeper learning curve; syncing costs extra.
Best for: privacy-minded power users and developers who want total control. See Obsidian.
Verdict: which AI note-taking tool should you pick in 2027?
There is no single winner — the right tool depends on the job. Start free with NotebookLM if your work is research and documents: it costs nothing and its cited answers are the most trustworthy AI here. Pick Notion AI if your notes already live in Notion and your team will pay for Business. Choose Mem if you capture ideas all day and want the app to organise them, and Reflect if privacy matters most. OneNote with Copilot suits Microsoft 365 households, Evernote suits classic note collectors, and Obsidian suits anyone who wants to own their notes outright and build their own AI setup.
If your notes are mostly meeting transcripts, a dedicated meeting tool does that job better — see our comparison of the best AI meeting notes tools. And if you write for a living, pair your notes app with one of the best AI writing tools to turn rough notes into finished drafts. Still weighing free versus paid? See how to tell if an AI tool is worth paying for.
FAQ
What is the best free AI note-taking tool in 2027?
Google NotebookLM (Gemini Notebook) — its free tier gives 100 notebooks with up to 50 sources each, cited answers and Audio Overviews at no cost. Obsidian's free core app is the best free pick for local files, with AI added through plugins.
Is Notion AI worth paying for?
Only on the Business plan ($20 per member per month, billed annually), where the full AI suite — Agent, AI meeting notes and enterprise search — actually lives. Plus only includes a limited trial.
Which AI note-taking app is most private?
Reflect, thanks to end-to-end encryption, and Obsidian, because your notes are local Markdown files and you choose which AI provider — if any — sees them. Mem is explicitly not end-to-end encrypted.
Can AI note-taking tools replace a human note-taker in meetings?
For capturing what was said, yes. For judgement calls and sensitive discussions, a dedicated meeting assistant is still better.
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