Simple Memo vs OneNote
Which Should You Choose?
OneNote is Microsoft's feature-rich note-taking app, but for quick capture on mobile it's too heavy. Loading notebooks, sections, pages, and OneDrive sync put typing 2.6 seconds away in our measurement (median). Simple Memo is purpose-built for one thing: be ready to type 0.4 seconds after the tap (warm launch, iPhone 16e), then email the thought to yourself.
This comparison is written by Simple Memo's developer using published product information and the developer's launch-time measurements (iPhone 16e, warm launch). We have not published a usage log, so this is not a hands-on review. OneNote organizes notebooks under a Microsoft account; Simple Memo needs no account and sends notes to an address you have verified.
What is OneNote?
Microsoft OneNote is a free note-taking app that organizes notes into notebooks, sections, and pages. It features rich text formatting, inking, image embedding, audio recording, and math equations, syncing across devices via OneDrive. It integrates deeply with the Microsoft 365 ecosystem. However, its feature-rich nature makes it slow to launch on mobile, it requires a Microsoft account, and its complex hierarchy is overkill for quickly jotting down a single thought. For users who want to instantly capture an idea and email it to themselves — not organize a digital notebook — OneNote is far more than needed.
Comparison Table: Simple Memo vs OneNote
| Feature | Simple Memo | OneNote |
|---|---|---|
| Launch Speed | 0.4s (type immediately) | 2.6s (measured median; syncs & loads UI) |
| One-Tap Send | Yes (direct email) | No (share flow required) |
| Email Send | one-tap direct send | Indirect via share menu |
| No Account Required | Use existing email | Microsoft account required |
| Free Tier | 3 sends/day (Obsidian-only saving is Premium) | Free (OneDrive 5GB cap) |
| Offline Support | Outbox auto-resend (free) | Offline editing available |
| Encryption | AES-GCM (on-device) | Section-level password lock |
| Notebook Hierarchy | None (intentional) | 3 levels (Notebook/Section/Page) |
| Inking & Drawing | No | Yes (Apple Pencil support) |
| Microsoft Integration | No | Word/Excel/Teams |
| UI Complexity | Minimal | Feature-rich / complex |
5 Structural Differences
-
1
Time to Type: Lightweight vs Heavyweight
OneNote loads its notebook structure, OneDrive sync, and UI before you can type — 2.6 seconds in our measurement (iPhone 16e, warm launch, median). Simple Memo was ready in 0.4 seconds in the same measurement; it opens only the input screen. -
2
Notebook Structure vs Flat Email
OneNote's 3-tier hierarchy (Notebook > Section > Page) excels at long-term knowledge organization, but when you just need to jot down a quick thought, deciding "which notebook, which section" creates cognitive load. Simple Memo sends flat emails. Organize later in your inbox. -
3
Microsoft 365 Dependency: Zero vs Deep Integration
OneNote requires a Microsoft account and integrates deeply with OneDrive, Teams, Outlook, and Word. Great for Microsoft 365 users, but ecosystem lock-in for everyone else. Simple Memo needs no Microsoft account — it operates on email, the universal protocol. -
4
Mobile Experience: Purpose-Built vs Desktop Port
OneNote for iPhone can save a new page to Quick Notes from the Home tab's + button (and from widgets), but organizing still happens in notebooks, sections and pages. Simple Memo is mobile-first: a single-screen app where "write and send" completes with just your thumb. -
5
Data Portability: Email vs OneDrive
OneNote notebooks are stored on OneDrive in OneNote's own format; OneNote for the web exports a notebook as a ZIP file, and pages can also be exported to PDF. Simple Memo data arrives as email, viewable, searchable, and forwardable from Gmail, Outlook, Apple Mail, or any platform. Email can be read in almost any mail app or device.
Who Should Choose Which?
- Need to capture ideas instantly
- Find OneNote's mobile launch too slow
- Don't want to use a Microsoft account
- Want memos delivered to your email inbox
- Prioritize speed and simplicity above all
- Don't want ecosystem lock-in
- Organize notes long-term in notebooks
- Use inking or hand-drawn diagrams
- Need Microsoft 365 integration
- Share notebooks with a team
- Need rich text and image embedding
- Already invested in the Microsoft ecosystem
Using Simple Memo - for Obsidian in a Microsoft 365 Environment
For Microsoft 365 users, OneNote is a natural choice. Its integration with Teams, Outlook, and SharePoint is powerful. However, OneNote's mobile app took 2.6 seconds to reach typing in our measurement (median).
The key advantage of Simple Memo in a Microsoft 365 environment is setting your Outlook email as the destination. Memos you send on the go are delivered to your Outlook inbox; memos you send while offline wait in the Outbox and are sent when the connection returns. Back at your desk, one click copies the content into OneNote. Using Outlook Rules, you can auto-sort Simple Memo emails into a dedicated folder. Because it doesn't use a Microsoft account, Microsoft sign-in issues don't affect Simple Memo.
FAQ
Is there a lighter alternative to OneNote for mobile note capture?
In our measurement (iPhone 16e, warm launch), OneNote's mobile app took 2.6 seconds from the tap to typing (median). For the specific use case of "quickly jot and email," Simple Memo launches in 0.4 seconds. It's not a OneNote replacement but a capture companion to pair with OneNote (ready to type about 0.4 seconds after the tap in the developer's warm-launch measurement).
How do I forward a OneNote page to Outlook email?
OneNote requires manual sharing via the share menu. Simple Memo sends memos to any email address with one tap — not just Outlook, but Gmail, Apple Mail, or any email service.
Can Microsoft account sign-out prevent me from taking notes?
OneNote is used while signed in with a Microsoft (or work/school) account. Simple Memo uses no account, so there is no sign-in to expire.
OneNote notebook organization feels overwhelming. Does Simple Memo require organizing?
Simple Memo has no folders or manual filing (with Obsidian set up and AI Auto-Tagging on, on-device AI adds a title, tags and a type). Memos are sent as emails, and organization happens in your email client (folders, labels, search). No in-app sorting or filing — the biggest operational difference from OneNote.
What's the best workflow combining OneNote and Simple Memo?
Capture fleeting thoughts with Simple Memo during commutes or meetings (sent to your inbox), then organize them into OneNote notebooks at your desk. Simple Memo handles capture speed; OneNote handles organizational depth.
