⚡ 簡単な評価:
- 価格: Notejoy runs Free, Solo $4, Plus $8, and Premium $12. Mem AI runs Free, Mem Pro $12/month, and Mem Teams at custom pricing.
- 最適な用途: Notejoy suits team collaboration and shared documents. Mem AI suits people building a second brain.
- 主な違い： Notejoy relies on manual organization with notebooks and tags. Mem AI uses ai to group similar notes for you.
- 私たちのおすすめ： Mem AI, because its smart search and ai features cut the time you spend hunting for notes.
安いほど メモアプリ is not the obvious loser here.
Notejoy starts at $4 while Mem AI jumps to $12.
But price is the smallest difference between these two tools.
One is built for team collaboration on shared documents.
The other is an ai powered workspace that files your notes for you.
概要
This Notejoy vs Mem AI comparison covers pricing plans, best features, search, and ease of use.
We also break down which app fits which kind of user.
弊社のライター陣は、両方のアプリを実際に使ってみました。
それらのメモは、以下の「チームが気づいたこと」のセクションに記載されています。
The rest comes from published specs, documentation, and G2 reviews.
Notejoyとは何ですか？
Notejoy is a fast and focused notes app built for teams.
効果は マックWindows、iOS、Android、そしてウェブ。
You create team libraries and invite people with different privileges.
Any note added to a library is shared with every member.
二重括弧のショートカットを使うと、ノート同士をリンクさせることができます。
Notes also support markdown, inline hashtags, and starring for quick access.
Here is a short walkthrough of the app in action.
ノートジョイ
A shared workspace for projects, departments, or a whole team. Multiple people edit the same note in real time. Search reaches 文章 画像やファイルの中に入っている。
Notejoyの価格設定
Here is what Notejoy costs in 2026. Four tiers, one of them free.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料 | 無料 | ソロユーザーが基本機能をテスト |
| ソロ | $4 | One person who wants more storage |
| プラス | $8 | Small teams sharing documents |
| プレミアム | $12 | Teams needing premium features and controls |
価格は2026年7月に確定しました。
無料トライアル: The free version works forever, with limited storage and features. No card needed to start.
返金保証: Notejoy does not advertise a set refund window. Test the free plan first.
📌 注記： The free version caps you at 100MB of storage. Offline support and end-to-end encryption sit behind the paid tiers.
⚠️ Pricing conflict: Some sources list a Notejoy premium plan at $48 per year. Our verified figure is $12 for Premium, and we use that number in every table on this page. Check the pricing page on the Notejoy website before you buy.
Notejoyの主なメリット
Notejoyが注目に値する理由は以下のとおりです。
- リアルタイムコラボレーション： Multiple people edit one note at once. Changes sync 即座に 皆のために。
- Powerful search with OCR: The search engine reads text inside images and PDFs. It needs specific search language to work well.
- Permission controls: Give view-only or comment-only access on sensitive documents. Useful when you protect client データ.
- Deep organization: Nested tags, nested notebooks, and bi-directional links keep large sets of notes tidy.
- Rich embeds: Drop in images, checklists, code, and live previews of Google Docs, Sheets, and Slides.
- Read receipts: See who opened your note and when. That transparency is rare in other apps.
- ウェブクリッパー: Save a website and set the location and tags before you clip it.
私たちのチームが気づいたこと
私たちの 作家 signed up for Notejoy and used it for shared project notes over several days. Here is what stood out:
Notejoyの長所と短所
✅ メリット
- Free plan available with no card required
- Real time editing with instant sync across a team
- Search finds text inside images and PDFs
- View-only and comment-only permissions on any note
- Native apps on Mac, Windows, iOS, and Android
❌ デメリット
- No ai features for writing or auto-organizing
- Search feels clunky and needs specific operators
- Free version is capped at 100MB of storage
- Offline access is locked to paid plans
- No global keyboard shortcut to create a note
Mem AIとは何ですか？
Mem AI is an ai notes app that organizes your notes for you.
Kevin Moody and Dennis Xu created it in 2019.
There is no folder system to maintain.
Ai groups similar content and surfaces it when it matters.
The app reads your notes semantically and connects relevant information.
It files notes effortlessly while you keep writing.
By 2026, Mem 2.0 works more like a parallel mind than a notepad.
Mem X acts as a knowledge-aware personal アシスタント across your notes.
Watch how the app handles a real note library.
🏆 Winner: Mem AI
質問する 質問 in plain English and get the right note back. Mem links existing notes on its own. Templates keep repeat writing consistent.
Mem AI の価格設定
Mem AI keeps its pricing plans simple. Three tiers, one of them free.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| メム | 無料 | Trying the basic features first |
| メモリプロ | 月額12ドル | Solo users who want full ai features |
| メンバーチーム | カスタム価格設定 | Teams and larger organizations |
価格は2026年7月に確定しました。
無料トライアル: The free version lets you test the app without a card. Ai features are capped.
返金保証: No public refund window is listed. Mem Teams pricing comes from a sales conversation.
📌 注記： Mem Pro at $12/month matches Notejoy Premium at $12. The difference is what you get: ai features versus team controls.
⚠️ 警告： Mem Teams has no public price. Budget for a quote if you need team collaboration at scale.
Mem AIの主な利点
Here is where mem’s ai features earn their keep:
- スマート検索: Ask a question the way you would ask a person. It works like a private search engine over all your notes.
- Related notes on tap: The app finds similar notes and documents next to whatever you are reading.
- No manual organization: Ai helps sort all the notes you capture, so you never worry about tagging by hand.
- テンプレート: テンプレートを作成する ミーティング notes or research. Repeat writing stays consistent.
- 便利な連携機能： Sync Google Calendar and pull in messages and files from tools like Slack.
- Summaries on demand: Mem can summarize a note or dig out one detail like a personal assistant.
- Real time savings: Mem reports up to a 60% drop in time spent searching and a 20% productivity gain.
This clip runs through the same benefits inside the app.
私たちのチームが気づいたこと
Our writer moved a working note library into Mem AI and used it daily for a week. Here is what stood out:
Mem AIの長所と短所
✅ メリット
- スマート検索は自然言語で質問に答えます
- Ai links related notes without any manual tagging
- Templates keep 会議メモ and research consistent
- Syncs with Google Calendar and imports from other tools
- Clean interface with almost no learning curve
❌ デメリット
- The ios app has a history of crashing
- Weak fit for people who 旅行 and work offline
- Ai features need an internet connection to run
- Mem Teams pricing is hidden behind a sales call
- No read receipts or view-only sharing controls
機能比較
Both apps store notes. That is where the overlap ends.
We walk through ten areas below, then finish on cost. Each one shows how the two tools handle the same job in a different way.
| 特徴 | ノートジョイ | メムAI |
|---|---|---|
| 開始支払価格 | 4ドル（ソロ） | 月額12ドル（Mem Pro） |
| 無料プラン | ✅ | ✅ |
| Ai Features | ❌ | ✅ |
| スマート検索 | ❌ | ✅ |
| リアルタイムコラボレーション | ✅ | ❌ |
| Manual Tags & Notebooks | ✅ | ❌ |
| ウェブクリッパー | ✅ | ❌ |
| オフラインアクセス | ✅（有料） | ❌ |
| Googleカレンダー同期 | ❌ | ✅ |
| 最適な用途 | チームコラボレーション | 個人の知識ベース |
1. Note Organization
ノートジョイ: You file everything yourself. Nested notebooks, nested tags, and inline hashtags give you a clear structure. Bi-directional links let you link notes to each other with a double bracket.
メムAI: There is no folder tree at all. The ai organizer groups different pieces of related content and shows them when they fit your current task. If you hate manual organization, this is the whole ピッチ.
2. Search and Finding Notes Quickly
ノートジョイ: Powerful search operators cover text inside images and PDFs through OCR. The trade-off is that search can feel clunky. You need to learn the specific search language to get good results for a certain word or phrase.
メムAI: Smart search reads plain questions and returns the note you meant. It behaves like Google over your own knowledge. Mem reports up to a 60% drop in search time from this feature alone.
💡 テスト結果： If you want to find notes quickly without memorizing operators, Mem AI wins this round outright.
3. Ai Features and Content Generation
ノートジョイ: No ai layer exists. Every note stays exactly as you wrote it. That suits people who want the app to stay out of the way.
メムAI: The smart ai writer drafts text and expands rough ideas. Content generation runs on your own notes, so the output matches your 声.
The research side of the ai works separately from the writer.
4. Writing and Templates
ノートジョイ: Markdown, checklists, code blocks, and highlighting cover most writing needs. You can drop in images and live previews of Google Docs, Sheets, and Slides.
メムAI: You create templates for any repeat format. Meeting notes, standups, and research logs all keep the same shape. That saves time and stops important information from slipping through.
5. Team Collaboration and Real Time Editing
ノートジョイ: Several people edit the same note at once and changes sync instantly. The Chatter feature adds a comment thread with reactions and @mentions. You can also see who viewed a note and when.
Team libraries handle the sharing side. Add a note to a library and every member gets it automatically.
メムAI: Sharing exists, but the app is built around one person’s brain first. Mem Teams unlocks group work at custom pricing. For project management and shared documents, Notejoy is the stronger fit.
6. Knowledge Base and Related Notes
ノートジョイ: Your knowledge base is as good as your filing habits. Links and nested notebooks work well, but nothing surfaces on its own.
メムAI: This is the second brain pitch in practice. Mem turns passive notes into data you can query for patterns and recurring feedback. Related notes appear beside whatever you open.
Summaries sit on top of that same knowledge layer.
7. Capturing Ideas and Web Clipping
ノートジョイ: The web clipper is fast and accurate. You set the location and tags before saving, so clipped pages land in the right place. A keyboard shortcut creates notes, though there is no global shortcut.
メムAI: Capture is stripped down on purpose. You dump ideas as they arrive and let the app file them. Nothing gets lost because you forget to tag it.
8. 統合
ノートジョイ: Connects to Slack, Trello, HubSpot, and Zoom. Live previews of Google Docs mean linked files stay readable inside a note.
メムAI: Google Calendar sync pulls your schedule in, and messages from tools like Slack land as searchable notes. The point is feeding the ai more context, not just linking apps.
9. Interface and Learning Curve
ノートジョイ: A custom sidebar puts your libraries, tags, and starred notes within reach. The layout will make sense to anyone who has used other apps in this category.
メムAI: The interface is minimal by design. There is little to configure, so the learning curve is short. G2 reviews highlight how quickly new users get going.
10. Offline Access and Mobile Apps
ノートジョイ: Native apps run on Windows, Mac, iOS, Android, and the web. Offline access ships with paid plans, so notes stay readable without an internet connection.
メムAI: The ios app has drawn complaints about crashing. G2 reviews also flag that heavy travellers need a stronger mobile experience. Ai features need a connection to work at all.
⚠️ 警告： If you work on planes or in dead zones often, Notejoy is the safer choice on mobile.
11. 価格設定とコスト
Here are the pricing plans side by side.
| ティア | ノートジョイ | メムAI |
|---|---|---|
| 無料 | 無料 | 無料（会員） |
| 入場料支払い済み | 4ドル（ソロ） | — |
| 中程度の給与水準 | 8ドル（プラス） | — |
| 最高額の報酬 | 12ドル（プレミアム） | 月額12ドル（Mem Pro） |
| Team tier | Included in Plus and Premium | カスタム価格設定（メンバーチーム向け） |
ノートジョイ: Four steps let you pay for exactly what you use. The solo plan at $4 is the cheapest way to escape the 100MB storage cap. Premium features like offline access and encryption sit at $12.
メムAI: One paid tier at $12/month keeps the choice simple. You either want the ai or you do not. Team buyers have to request a quote, which slows down procurement.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 予算が限られている | ノートジョイ | Paid entry at $4 |
| チームコラボレーション | ノートジョイ | Real time editing and libraries |
| 第二の脳 | メムAI | Ai links related notes |
| Search without operators | メムAI | Plain language smart search |
| オフラインでのメモ作成 | ノートジョイ | Offline access on paid plans |
| コンテンツ生成 | メムAI | Built-in ai writer |
💰 あなたの予算
Notejoy’s solo plan costs $4 and its top tier matches Mem Pro at $12. Both apps have a free plan, so you can test before any money moves.
🔌 あなたの技術スタック
Notejoy plugs into Slack, Trello, HubSpot, and Zoom. Mem AI leans on Google Calendar and message imports to feed its ai more context.
📝 あなたの文章スタイル
Markdown writers who like structure will feel at home in Notejoy. People who ブレインストーミング ideas in bursts and sort later belong in Mem.
🎓 あなたの経験レベル
Mem AI has the shorter learning curve because there is almost nothing to set up. Notejoy asks more of you upfront but rewards a tidy system.
🆓 無料トライアルとデモ
Run the same week of real notes through both free versions. That test is more helpful than any feature list, including this one.
🛟 サポートオプション
Both lean on documentation and email support rather than phone lines. Mem Teams buyers get a direct sales contact during setup.
🔒 データプライバシーとセキュリティ
Notejoy adds end-to-end encryption on premium and lets you protect sensitive files with view-only access. Mem AI reads your content to work, which is worth thinking about for client data.
切り替えガイド
Already on one of these? Here is what changes when you move.
🔄 Switching from Notejoy to Mem AI?
✅ 得られるもの：
- Smart search that understands full questions
- Automatic links between similar notes
- An ai writer and summaries on existing notes
❌ 失うもの：
- Real time collaboration and team libraries
- 画像やPDFファイル内のOCR検索
- Offline access and the web clipper
📋切り替え方法：
- Export your Notejoy notebooks to markdown
- Create a free Mem account and import the files
- Connect Google Calendar and let the ai index everything
🔄 Switching from Mem AI to Notejoy?
✅ 得られるもの：
- Live editing with your team on one note
- Read receipts and permission controls
- Offline access and native desktop apps
❌ 失うもの：
- Every ai feature, including smart search
- Automatic surfacing of related notes
- Templates driven by your own writing history
📋切り替え方法：
- Export your Mem notes as markdown documents
- Sign up for Notejoy and build your notebooks
- Import, then add tags so search can reach them
私たちのレビューで取り上げられなかったこと
This comparison focused on solo users and small teams. We did not test Mem Teams at scale or push Notejoy past a few dozen seats. Admin controls, bulk licensing, and API access sit outside what we looked at. Our notes reflect the July 2026 versions of both apps, and features move fast in this category. If you manage a large department, your priorities will differ from ours.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | ノートジョイ |
| 🚀 Ai Features | メムAI |
| 🔍検索 | メムAI |
| 👥 チームコラボレーション | ノートジョイ |
| 🧠 知識ベース | メムAI |
| 👶 使いやすさ | メムAI |
| 📱 Offline and Mobile | ノートジョイ |
| 🏆総合優勝 | メムAI |
🏆 WINNER: MEM AI
Mem AI wins 4 out of 7 categories.
最適な用途: Building a second brain, research writing, and anyone who wants notes organized without lifting a finger.
These are two different products wearing the same label. Notejoy is a shared workspace. Mem AI is a personal knowledge engine.
Notejoy is the better tool if your notes live inside a team. Real time editing, permissions, and read receipts do work that Mem does not attempt.
Mem AI takes the overall win because it changes the job itself. You stop filing and start asking, which is the bigger shift for most people taking notes alone.
Notejoyの比較をもっと見る
Here is how Notejoy holds up against other apps in the same space:
Notejoy vs エバーノート
Notejoyが勝利した点： Team notes and shared libraries, lighter and faster interface, per-note permission controls
Evernoteが優れている点： Web clipping depth, building a large personal knowledge library, ai-assisted search across years of notes
Notejoy vs 概念
Notejoyが勝利した点： Speed on large note sets, OCR search inside files, simpler onboarding for non-technical teammates
Notionが勝利した点： Databases and project management views, template marketplace, flexibility as an all-in-one workspace
Notejoyが勝利した点： Read receipts on shared notes, cleaner sharing model, nested tags that scale
OneNoteが優れている点： Free-form canvas and handwriting, price at zero, deep Microsoft 365 integration
Notejoy vs クラフト
Notejoyが勝利した点： Cross-platform parity on Windows, search operators, team library structure
クラフトの勝利点： Document design and typography, Apple-first polish, publishing notes as web pages
Mem AIの比較
If you are weighing mem ai alternatives, start here:
Mem AI vs Notion
Mem AIが勝利した点： Zero-setup organization, natural language recall, surfacing notes you forgot you wrote
Notionが勝利した点： Structured databases, team wikis, controlling exactly where a page lives
Mem AI vs Obsidian
Mem AIが勝利した点： Automatic connections between ideas, cloud sync out of the box, summarizing long notes
Obsidianが勝利した点： Local files you own outright, plugin depth, working with no internet connection
Mem AI vs Roam Research
Mem AIが勝利した点： Links made for you instead of by hand, plain-language search, gentler first week
Roam Research wins on: Deliberate networked thinking, daily notes workflow, block-level referencing
Mem AI vs MyMind
Mem AIが勝利した点： Writing and content generation, calendar and message imports, summaries of what you saved
MyMind wins on: Visual saving of images and videos, privacy-first storage, effortless bookmarking
よくある質問
Notejoyは無料ですか？
Yes. A free plan exists with 100MB of storage and limited features. Paid tiers run $4, $8, and $12.
Mem AIの価格はいくらですか？
The free version costs nothing. Mem Pro is $12/month. Mem Teams uses custom pricing, so you request a quote.
Mem AIは安全ですか？
The app applies standard encryption in transit and at rest. Its ai does read your content to work, so weigh that against sensitive client data.
Notion AIとMem AIの違いは何ですか？
Notion AI sits inside a workspace you structure yourself. Mem builds the structure for you and answers questions across every note.
Is there an ai for note-taking?
Yes, and Mem AI is one of the clearest examples. It writes, summarizes, and organizes notes without you tagging a single thing.
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