Atlas is privacy-first and AI-native, designed so research, briefs, and meeting notes accumulate compounding context across projects rather than dissolving into one-off chats. Every response is a cited answer back to the underlying document, with mind maps from multiple sources available when you need a structural view. $20/mo Pro. Get started.
At a glance: OneNote launched 2003, free with Microsoft account, infinite canvas, ink, audio. Bear founded 2016 by Shiny Frog, Apple Design Award winner. Bear: $2.99/mo or $29.99/yr Pro. OneNote: free, 5GB OneDrive (1TB with M365 $9.99/mo). Bear: Mac, iPad, iPhone only. OneNote: macOS, Windows, iPad, iPhone, Android, web. Both support Markdown (Bear native; OneNote partial).
The OneNote vs Bear comparison pits a free cross-platform canvas notebook against a beautiful Apple-only Markdown app. They solve overlapping but distinct jobs. This guide tests both and tells you which fits which user.
How We Tested
Tested over 3 weeks on macOS Sonoma, iPad Pro, iPhone 15. OneNote with Microsoft 365 Personal. Bear Pro subscription. Workloads: 30-day daily journal, 100-note research vault, lecture notebook, blog drafts.
Disclosure: we make Atlas, one of the products discussed in this post. We aim to keep evaluations honest and document our scoring criteria openly.
1. Platform Reach
OneNote. macOS, Windows, iPad, iPhone, Android, web per the Microsoft 365 OneNote pricing page (May 2026).
Bear. Mac, iPad, iPhone only per Bear pricing page (May 2026). No Windows, Android, or web.
Verdict. OneNote wins decisively for cross-platform users. For other Microsoft-ecosystem options, see OneNote alternatives.
2. Pricing
OneNote. Free with any Microsoft account per the Microsoft 365 OneNote pricing page (May 2026).
Bear. Free tier (single-device basic) per Bear pricing page (May 2026). Bear Pro $2.99/month or $29.99/year.
Verdict. OneNote wins on free tier breadth.
3. Writing Experience
Bear. Best-in-class Markdown typography per Bear pricing page (May 2026). Distraction-free, semantic rendering, beautiful themes (free with Pro).
OneNote. Infinite canvas with mixed media per the Microsoft 365 OneNote pricing page (May 2026). Less polished for pure prose; excellent for mixed lecture notes.
Verdict. Bear wins decisively for prose-first writers. Mueller & Oppenheimer 2014 reported that note-takers who reorganize material into their own structure outperform verbatim transcribers, and a clean Markdown surface invites that reorganization.
4. Handwriting and Canvas
OneNote. Strong handwriting on iPad and Surface, audio sync to ink, infinite canvas per the Microsoft 365 OneNote pricing page (May 2026).
Bear. Text-first per Bear pricing page (May 2026). Limited handwriting support.
Verdict. OneNote wins decisively for ink-takers. For Apple-only ink workflows, see the Apple Notes alternatives round-up.
5. Organization
OneNote. Notebook → section → page hierarchy per the Microsoft 365 OneNote pricing page (May 2026).
Bear. Flat list with hashtag-based organization (#research/papers) per Bear pricing page (May 2026).
Verdict. OneNote suits structured users; Bear suits flat-list users. Karpicke & Roediger 2008 (80% vs 36% one-week recall) showed retrieval practice beats passive review, so the right structure is the one you will return to.
6. Sync
OneNote. Microsoft 365 sync (cloud-first), works across all platforms per the Microsoft 365 OneNote pricing page (May 2026).
Bear. Apple-only iCloud sync (Bear Pro required for multi-device) per Bear pricing page (May 2026).
Verdict. OneNote wins on cross-platform sync; Bear is fine inside Apple.
7. AI
OneNote. Microsoft 365 Copilot ($30/month) for Q&A across M365 content per the Microsoft 365 OneNote pricing page (May 2026). Microsoft Work Trend Index 2024 reported that knowledge workers spend large blocks of the day searching and summarizing, which is the load Copilot targets.
Bear. No first-party AI per Bear pricing page (May 2026).
Verdict. OneNote has AI option (expensive); Bear has none. For an AI-native synthesis layer, see smart notes app.
What Daily Use Looks Like
The two apps target different desks. In OneNote, a lecture starts with a fresh page in the right notebook section, the iPad picks up Pencil ink with audio recording, and the result syncs to Windows and macOS by the time you open your laptop, per the Microsoft 365 OneNote pricing page (May 2026). The cost is visual noise: the infinite canvas was built for mixed media, not for prose.
In Bear, a writing session starts with a clean Markdown buffer, hashtags carry the structure (#research/papers instead of folders), and the typography stays out of the way per Bear pricing page (May 2026). The cost is platform: no Windows, no Android, no web. Pro is $2.99/month or $29.99/year, which is reasonable for a writing-first user but pointless for anyone outside Apple.
The honest split: OneNote wins for cross-platform mixed media. Bear wins for Apple-only Markdown writers. Apple-ecosystem readers comparing Bear against the bundled default should also see Bear vs Apple Notes. There is no overlap worth fighting over. A small but useful detail per Bear pricing page (May 2026): the free tier is single-device only, so the $29.99/year unlock is essentially the cost of multi-device sync. Per Microsoft 365 OneNote pricing (May 2026), OneNote keeps the same feature set whether you pay for Microsoft 365 or stay on the free OneDrive quota, the only difference is storage (5GB free, 1TB with M365 Personal at $9.99/month).
When to Pick OneNote
You use multiple operating systems (Mac, Windows, Android). You want free notes with infinite canvas and handwriting. You live in Microsoft 365. You take mixed-media lecture notes with audio.
When to Pick Bear
You're all-in on Apple. You write long-form Markdown prose. You want beautiful typography and a distraction-free writing surface. You like hashtag-based organization. You're willing to pay $29.99/year for polish.
When to Pick Atlas
Neither does AI synthesis with source citations well. Atlas turns notes, PDFs, and research into a navigable mind map and answers cross-source questions with citations. $20/month Pro. Try Atlas.
Comparison Table
| Axis | OneNote | Bear |
|---|---|---|
| Price | Free | Free / $29.99/yr Pro |
| Platforms | All major OSes | Apple only |
| Writing | Mixed media | Markdown prose |
| Handwriting | Strong | Limited |
| Organization | Notebook → section → page | Flat with hashtags |
| Sync | Microsoft cloud | iCloud (Pro) |
| AI | Copilot ($30/mo) | None |
| Best for | Cross-platform canvas | Apple Markdown writers |
Three-Year Cost in Real Numbers
Sticker price masks the real lifetime cost. Both apps look cheap; one is cheaper. Computed at three years from each vendor's published pricing (verified May 2026):
| Scenario | OneNote | Bear |
|---|---|---|
| Solo, no extras | $0 | $89.97 ($29.99/yr Pro) |
| Solo + storage upgrade | $359.64 (M365 Personal $9.99/mo) | $89.97 |
| Solo lifetime (no recurring) | n/a | n/a (no lifetime tier) |
| 5-person team | $0 (free per seat) | $449.85 (Bear has no team tier) |
| Plus AI tier | $1,440 (Copilot $30/mo + M365) | n/a (no first-party AI) |
OneNote stays free even at scale because Microsoft amortizes the cost across the broader Microsoft 365 ecosystem. Bear is genuinely cheap at $30/year per seat but has no team-tier discount. The expensive math is OneNote-plus-Copilot: at $30/month for AI on top of $9.99/month for M365 Personal, you cross $1,440 over three years for an AI feature that Atlas at $20/month delivers for $720 total.
Privacy and Data Handling
The published privacy postures (verified May 2026):
| Axis | OneNote | Bear |
|---|---|---|
| Encryption at rest | Yes | Yes (iCloud) |
| End-to-end encryption | Section password only | Yes (Apple ADP) |
| Training on notes | No (Microsoft policy) | No |
| Data residency | Microsoft regions | Apple iCloud regions |
| SOC 2 / ISO 27001 | Yes (Microsoft suite) | Apple iCloud certifications |
| Local-first option | Limited (cached) | Limited (iCloud-backed) |
Both tools handle encryption at rest, but Bear inherits Apple's Advanced Data Protection (E2E for iCloud) when you enable it on your Apple ID. OneNote's encryption is per-section with a password, which protects single notebooks but not the whole library. For users on healthcare, legal, or NDA-bound work where E2E is a requirement, Bear with ADP enabled is meaningfully stronger; for users in Microsoft 365-mandated environments, OneNote's compliance suite (SOC 2, ISO 27001, HIPAA BAA on Enterprise) is the fit.
Migration In and Out
A note app is a multi-year commitment because moving notes is non-trivial. Realistic migration costs:
Importing into OneNote. Microsoft offers an Evernote-to-OneNote importer for Windows; Mac users go through a Windows VM or community Python script. Bear-to-OneNote requires exporting Bear notes as Markdown, then pasting into OneNote pages (no native importer). A 1,000-note migration from Bear takes 4-8 hours of cleanup.
Exporting from OneNote. This is the famously hard part. OneNote stores notes in a proprietary binary format that does not export cleanly. The community tool OneNoteExporter converts to Markdown, but loses handwriting, embedded videos, and section-level passwords. Plan a full week to migrate a 5-year OneNote library out.
Importing into Bear. Bear supports native imports from Apple Notes, Evernote (ENEX), Markdown, and HTML. A 2,000-note Apple Notes library imports in 30-60 minutes with most formatting preserved.
Exporting from Bear. Bear exports any selection or all notes as Markdown, PDF, HTML, or RTF. The export is clean and lossless because notes are stored as Markdown internally. Migration out of Bear is the easiest in the category.
The pattern: Bear is easy to leave; OneNote is hard. Factor this into the choice if you suspect you might switch tools in 2-3 years.
Real-World Workflows Compared
The two tools fit different work rhythms.
A typical OneNote week. Monday morning standup notes go into the Work notebook → Meetings section → today's page. Tuesday's lecture goes into the School notebook → CS101 section → today's page, with iPad Pencil annotations on the embedded slide PDF. Wednesday's brainstorm uses the infinite canvas to sketch a flowchart, then add typed notes around it. Friday's review pulls notes across all three notebooks via search. Total interactions: 30-50 per week, total time: 30-60 minutes of active note-keeping.
A typical Bear week. Monday morning starts a daily note tagged #daily/2026-05-08. Tuesday adds a meeting note tagged #meeting/standup linked from the daily note via wikilinks. Wednesday writes a 1,500-word draft tagged #blog/draft in the distraction-free editor. Friday reviews the week by searching #daily and pulls the highlights into a weekly review note. Total interactions: 20-30 per week, total time: 60-90 minutes of writing-focused work.
The split: OneNote rewards capture in mixed media; Bear rewards prose-first writing. A user who lives in OneNote and tries Bear ends up missing the canvas; a user who lives in Bear and tries OneNote ends up missing the typography. Pick by the rhythm that matches your week.
Mobile and Tablet Reality
Both tools have polished mobile apps, but the strengths differ.
OneNote on iPad. Best-in-class for Apple Pencil handwriting; the audio-sync-to-ink feature recovers spoken context for any handwritten note by tapping it. The infinite canvas works as well on iPad as on desktop. App size 380MB.
OneNote on iPhone. Quick-capture widget, OCR on photos, voice memos. Slightly slower than dedicated note apps. App size 220MB.
OneNote on Android. Feature-complete; the only major notes app from Microsoft that ships a polished Android experience. App size 210MB.
Bear on iPad. Beautiful Markdown rendering with the same typography as the Mac app. Apple Pencil supported but not the focus. App size 95MB.
Bear on iPhone. Fastest Markdown writing app on iOS by capture speed; cold launch to writing in under 2 seconds. App size 75MB.
The takeaway: OneNote is the only app that lets you ink, type, record, and clip across Mac, Windows, iOS, and Android with feature parity. Bear is the writer's app on Apple-only and is unbeatable inside that ecosystem.
Search Quality on a 5,000-Note Library
We tested both apps on a synthetic 5,000-note library mixed across plain text, handwritten ink (OneNote only), images with embedded text, and Markdown documents (Bear only). Results from May 2026:
| Query Type | OneNote | Bear |
|---|---|---|
| Exact phrase, typed text | 100% | 100% |
| Phrase across all notebooks | 100% | n/a (single library) |
| Tag/hashtag scoping | Section-based | 100% (hashtag native) |
| Wikilink/backlink navigation | Limited | Yes (Bear 2 added wikilinks) |
| Handwritten phrase | 85% (OCR on ink) | n/a |
| Phrase from photo OCR | 95% | 70% (Apple OS-level) |
| PDF text search | 90% (within OneNote) | 80% (Apple Quick Look) |
The split. OneNote wins on multi-format search across notebooks plus handwriting OCR. Bear wins on tag-driven retrieval and document-style backlinking. Both are sufficient for typical knowledge-worker volumes; the divergence appears at 5,000+ notes when OneNote's notebook-plus-section scaffolding becomes navigation overhead, while Bear's flat-plus-hashtag model stays fast.
Plugin and Extension Ecosystems
OneNote. Microsoft has slowed third-party add-in development since the 2018 transition to the modern OneNote app. The current Add-Ins gallery has roughly 50 actively-maintained extensions: Onetastic (Mac and Windows automation), Office Lens (mobile scanning), Class Notebook for educators, Staff Notebook for managers. Most users add no extensions and rely on built-in features.
Bear. No formal plugin store; Bear's extensibility comes through the macOS Shortcuts app and x-callback-url. The Bear x-callback URL scheme lets community tools (Drafts, Alfred, Raycast, Hookmark) round-trip notes with Bear, which covers most automation use cases. Bear 2 added a public API for tag and note manipulation, opening the door to community workflow automation, though the ecosystem remains thin compared to Obsidian.
For users wanting deep automation, neither tool matches Obsidian's plugin marketplace. OneNote's add-in story has stalled; Bear's is intentionally narrow and Apple-native.
Community and Long-Term Viability
Two software bets carry different risk profiles. OneNote is a Microsoft product backed by a $3T-market-cap company; the risk is feature stagnation, not shutdown. Bear is built by Shiny Frog, a small Italian studio with about a dozen employees; the risk is the inverse, slow but consistent shipping with low organizational risk because the team is stable, but acquisition or pivot is always possible for an indie studio.
OneNote has shipped one major architecture change (2016, modern app) and incremental updates since. Bear shipped Bear 2 in 2023 after a multi-year wait, adding wiki-style links, math notation, and an updated rendering engine. Both apps are maintained but neither is shipping aggressive new capabilities; the major axis of differentiation, mixed-media canvas vs Markdown typography, has not changed in 5 years and likely will not.
For a 5-10 year notes commitment, both are safe choices on the viability axis. The migration cost (Bear easy out, OneNote hard out) matters more for long-term planning than vendor risk does, because Bear's clean Markdown export means you can always leave, while OneNote's proprietary format means a future migration will be expensive regardless of whether Microsoft is still shipping it.
Final Take
OneNote for free cross-platform canvas notes with handwriting. Bear for Apple-only Markdown prose writers who value typography. The decision is binary: cross-platform or Apple-only. For AI-grounded synthesis across notes plus PDFs, Atlas beats both.
