OneNote vs. Notion vs. Obsidian: Which Free Plan Is Best for Students in 2026?

TL;DR: Which App Wins for Your Situation?

No single app is the best free note-taking tool for every student. The right choice depends on your device, your study habits, and how you want to organize your notes across semesters. Here is the short version:

• OneNote — Best for students who want the fastest capture, cross-platform access, and strong handwriting support. The free plan gives you 5GB of OneDrive storage and all core features with no crippling. If you take handwritten notes on an iPad or Surface, or if you just want an app that opens and starts recording in under a second, start here.
• Notion — Best for students who want an all-in-one workspace for notes, project tracking, and databases. If you have a .edu email from a college or university, you get the Plus plan (normally $10/month) for free. The tradeoff is a steeper learning curve and slower capture speed. This is the right pick if you are willing to invest time in setup for a more organized semester.
• Obsidian — Best for students who want local-first ownership, no storage limits, and a system that grows with you across multiple years of study. The core app is free with no signup required. Multi-device sync costs $4/month (or free via Git). If you are building a personal knowledge base that connects ideas across courses, Obsidian is unmatched.

Free Plan Comparison Table: OneNote vs. Notion vs. Obsidian

The table below lays out what each app gives you at $0. All data was last verified in June 2026.

OneNote Free: The Lowest-Friction Option for Most Students

Microsoft OneNote has been around for nearly two decades, and its free plan remains one of the most generous in the note-taking space. PCMag names it "Best Overall" among note-taking apps, noting that the free version includes "every feature you could want, from organizational structure to cross-platform syncing, voice notes, and OCR." There is no feature crippling — you get the same app as paid users, just with a 5 GB storage cap.

Why OneNote Works for Students

• Fast capture. In a 14-day student test by Atlas Workspace, OneNote had an average daily capture friction of 0.6 seconds — the second-fastest among tested apps. When you are in a lecture and the professor moves to the next slide, that speed matters.
• Handwriting and OCR. OneNote is the only app in this comparison with native handwriting support. Its OCR can search handwritten text and text in images — a feature that competitors typically reserve for paid tiers. For STEM students who write equations or draw diagrams, this is a major advantage.
• Infinite canvas. OneNote's notebook structure (sections → pages) combined with an infinite canvas on each page lets you arrange content freely. You can drop a PDF on one side of the page and write notes next to it without worrying about layout constraints.
• Real-time collaboration. Multiple students can edit the same notebook simultaneously. For group projects or shared study guides, this is a native feature — not a premium add-on.
• Cross-platform availability. OneNote runs on Windows, Mac, iOS, Android, and the web. Zapier confirms it is "widely available on every platform." If you switch between a laptop, iPad, and phone during the day, OneNote syncs seamlessly via OneDrive.

The 5 GB Storage Limit in Practice

Five gigabytes sounds small, but for text-heavy notes it goes a long way. A typical semester of typed lecture notes uses roughly 50–100 MB. The storage fills up when you attach PDFs, images, or audio recordings. If you are in a course that distributes 50-page PDFs weekly, you may hit the cap before finals. One workaround: store large files in OneDrive separately and link to them from your notes.

Notion Free with .edu: The All-in-One Workspace at No Cost

Notion is the most-installed note-taking app among college students in 2026, according to Atlas Workspace. The reason is straightforward: with a .edu email, students get the Plus plan for free — a plan that normally costs $10 per member per month.

What the .edu Plus Plan Includes

Notion's Education Plus Plan gives individual students unlimited pages and blocks, unlimited file uploads, and 30-day version history. The standard free personal plan, by contrast, limits file uploads to 5 MB per file — a restriction that makes it nearly unusable for attaching lecture slides, images, or PDFs.

Eligibility requirements: You must be a student or educator at an accredited college or university with a school email address. K-12 students and educators are explicitly not eligible. If you are in high school, you cannot get the free Plus plan — you are limited to the standard free personal plan with its 5 MB upload cap.

The Learning Curve Tradeoff

Notion's power comes from its flexibility — databases, linked views, templates, and relational properties. That flexibility comes at a cost. The same Atlas Workspace test that measured OneNote at 0.6 seconds of capture friction measured Notion at 2.4 seconds. That is four times longer to open the app and start typing. In a fast-paced lecture, that delay can mean missing the next point.

Notion is not designed for quick capture. It is designed for organization after capture. If you are willing to spend 30 minutes setting up a class dashboard with database views and templates, you can build a system that keeps all your courses, assignments, and notes in one place. But if you want to open an app and start writing immediately, OneNote or Obsidian will serve you better.

Obsidian Free: Local-First Ownership for Long-Term Knowledge Building

Obsidian takes a fundamentally different approach. It is not a cloud service. It is a local Markdown editor that reads and writes plain text files on your computer. Obsidian's pricing page states: "Free without limits. No sign-up required. No strings attached." There are no storage caps, no note limits, and no feature gates on the core app.

What You Get at $0

• Local Markdown files. Every note is a plain .md file on your hard drive. You can open them with any text editor. There is no proprietary format, no database lock-in, and no vendor holding your data hostage.
• Graph view and backlinks. Obsidian's bidirectional linking and graph view let you connect ideas across courses and semesters. If you are studying a topic that spans multiple classes — say, machine learning in both a CS course and a statistics course — you can link those notes together and see the connections visually.
• Plugin ecosystem. The community has built over 1,500 plugins. You can add spaced repetition flashcards, Kanban boards, daily notes, and more. The core app is free; the plugins are free.
• No signup required. Download the app, point it at a folder, and start writing. There is no account creation, no email verification, and no data collection.

The Sync Question

The one gap in Obsidian's free plan is multi-device sync. Because your notes live on your local drive, you cannot access them from your phone or another computer without a sync solution. Obsidian's official Sync service costs $4 per user per month (billed annually) with end-to-end encryption and version history. Students and faculty get a 40% discount, bringing the cost to roughly $2.40 per month.

There is a free alternative: sync your vault folder via Git, Dropbox, or Google Drive. This requires some technical setup — you need to manage merge conflicts if you edit the same note on two devices — but it works. If you are comfortable with the command line, you can have free multi-device sync in about 15 minutes.

Side-by-Side: What Each App Does Better

The table below maps each app to specific student scenarios. Use it to match your study habits to the right tool.

The structured-template group in the Atlas Workspace test (which used OneNote and Notion) scored 71% on a 30-question recall quiz after 14 days, compared to 58% for the freeform group (Apple Notes, GoodNotes). This suggests that using a structured app — any structured app — improves retention. The choice between OneNote, Notion, and Obsidian matters less than the fact that you are using a system that organizes your notes intentionally.

Honest Cons: What Each App Gets Wrong for Students

No app is perfect. Here are the honest tradeoffs for each one.

OneNote's Weaknesses

• 5 GB storage cap. If you attach many PDFs, images, or audio recordings, you will hit the limit. The cap applies to your entire OneDrive, not just OneNote.
• Microsoft ecosystem dependency. You need a Microsoft account to use it. If your school uses Google Workspace, you are managing two accounts.
• Limited export options. Exporting notes out of OneNote is harder than it should be. The native export formats are PDF and Word, but formatting often breaks. If you plan to switch apps later, expect some friction.
• No backlinks or graph view. OneNote is organized hierarchically (notebook → section → page). It does not support bidirectional linking or a graph view, which limits its usefulness for long-term knowledge building.

Notion's Weaknesses

• Steep learning curve. The 2.4-second capture friction is a real barrier in fast-paced lectures. You need to invest time upfront to build a system that works for you.
• No offline-first reliability. Notion is a web app with a desktop wrapper. Offline access is limited to cached pages. If you lose internet during a lecture, you may not be able to access your notes.
• No handwriting support. If you take handwritten notes on an iPad, Notion is not the right tool. It has no native ink support.
• .edu eligibility gap. High school students cannot access the free Plus plan. The standard free plan's 5 MB upload limit makes it impractical for most coursework.

Obsidian's Weaknesses

• Sync costs money (or effort). Official Sync is $4/month (discounted to ~$2.40 for students). Free alternatives like Git require technical setup.
• Plugin complexity. The plugin ecosystem is powerful, but it can be overwhelming. New users often spend hours configuring their vault instead of taking notes.
• No real-time collaboration. Obsidian is designed for individual use. There is no native way to collaborate on a note in real time. Plugins exist, but they are not seamless.
• No mobile handwriting support. The mobile app exists, but it does not support handwriting input. If you need to write on an iPad, Obsidian is not the answer.

Migration Ease: Switching Between OneNote, Notion, and Obsidian

If you are not sure which app to commit to, consider how easy it is to leave. Data portability varies significantly between the three.

• OneNote → elsewhere: Export is limited. You can export individual pages as PDF or Word documents, but the formatting often breaks. There is no bulk export to Markdown. If you think you might switch later, OneNote is the hardest to leave.
• Notion → elsewhere: Notion supports Markdown and HTML export. You can export an entire workspace as Markdown and CSV. The export preserves most formatting, though database views and relational links do not transfer cleanly. Migration is moderate difficulty.
• Obsidian → elsewhere: Obsidian stores notes as plain Markdown files. You can open your vault folder in any Markdown editor — Typora, VS Code, iA Writer — and your notes work immediately. There is no export step. Obsidian is the easiest to leave, which is ironically one of its strongest features.

If you are a student who values the ability to switch tools without losing years of notes, Obsidian's local Markdown format is the safest bet. If you prioritize convenience and collaboration over portability, OneNote or Notion may serve you better in the short term.