Memotto

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No sign-up · Completely free

A collaborative note app that's completely free? No way.

—And yet, here we are.

Real-time collaborative editing requires sophisticated sync technology and servers running 24/7—costs that are hard to avoid. That's why most tools end up either charging or capping the number of users.

Memotto slashes server costs through proprietary technology. We've even thrown out SEO conventions and cut domain expenses on top of that.

By stripping away everything that wasn't essential—just to offer you a great service for free—we built a real-time collaborative note app that runs entirely on ad revenue.

Start from a template
No sign-upReal-time syncCompletely free
memotto.pages.dev/memo/abc123

🛒 This week's shopping list

Milk - 1L
Bread - 6-slice loaf
Eggs - pack of 10Taro
Shampoo
Tissue paperHanako
3 people editingTaroHanakoJiro

Announcements

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What you can do with Memotto

From teamwork to publishing to organizing ideas—three powerful capabilities in a single service.

Core feature

Real-time collaborative editing

No sign-up. Just share a URL and start writing together on the spot.

No account, no app install. Share the note's URL and multiple people can edit in real time. Perfect for meeting minutes, brainstorming, checklists, and other teamwork.

  • No sign-up—join instantly via URL
  • See everyone's cursors live
  • Great for minutes, brainstorming, and task tracking
Start from a template
Publish & share

Public notes

Publish a note to the world as an article. Your notes become your blog.

Publish any note as a blog article in one click. SEO-ready, with social sharing and comments built in. Perfect for sharing your team's knowledge with the world.

  • Publish notes as articles, as-is
  • Social sharing and comments included
  • SEO-ready so search engines find it
Browse public notes
NEW

AI Prompt Builder

Just fill in a form, and your AI prompt is ready.

Enter your team's skills, assets, and goals into a form, and get a high-quality prompt you can paste straight into ChatGPT, Claude, or Gemini.

  • Fill a form—your prompt is done
  • Works with ChatGPT / Claude / Gemini
  • Four templates: new business, hiring, marketing, and more
Build a prompt
Memotto Premium

Even moreconvenient.

All the free features stay. With Google sign-in + $2.99/month, you also get cross-device sync, invite-only notes, full-text search, restore, and ad-free—five extras in total.

$2.99/ month (tax incl.)

Cancel anytime · Free features stay free forever

  • Card payments are processed by Stripe
  • Cancel or get receipts from the customer portal
  • Anonymous notes stay free forever
  • 01

    Sync notes across devices

    Sign in on any device and your full note list is right there.

  • 02

    Only invitees can edit

    Invite-only notes that only people signed in with the Gmail addresses you specify can view or edit.

  • 03

    My page + full-text search

    See all your notes in one place. Search across titles and body text instantly.

  • 04

    30-day restore for deleted notes

    Deleted notes go to a trash bin. Restore them later from your page.

  • 05

    Hide ads

    All in-page ads disappear, leaving a clean screen so you can focus on your notes.

Latest Public Notes

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Hit the ground running with templates

From classic meeting minutes to travel plans and brainstorms—just pick a template and you'll start with a note that already has the right sections in place.

See all templates
会議・ミーティング

会議議事録

チームミーティングや会議の議事録を効率的に記録できるテンプレートです。

See template details
会議・ミーティング

ブレインストーミング

アイデア出しやブレインストーミングセッションで使用できるテンプレートです。

See template details
プロジェクト管理

プロジェクト計画書

プロジェクトの全体計画を整理するためのテンプレートです。

See template details
プロジェクト管理

週次進捗報告

プロジェクトや業務の週次進捗を報告するためのテンプレートです。

See template details
個人・ライフスタイル

買い物リスト

家族や友人と共有できるお買い物用テンプレートです。

See template details
個人・ライフスタイル

旅行計画

旅行の計画を立てるためのテンプレートです。同行者と共有して使えます。

See template details
Security & Privacy

Anyone with the URL can access it?
Actually, it's quite safe.

"Isn't it risky that anyone who knows the URL can view it?" You might think so. In reality, it's far safer than the username/password combinations most people set themselves.

Why is it safer than a password?

Memotto's security strength, in numbers

122-bit
Encryption key strength
vs. passwords: typically 32–64 bits
5.3×10³⁶
Possible ID combinations
vs. passwords: 10⁶–10¹²
∞ years
Time to guess
vs. passwords: hours to days

In plain terms:Stumbling across your note's URL by chance is about as hard as picking one specific grain of sand from every grain on Earth.

🔬 What about quantum computers? Even with quantum computing, 122 bits only drop to the equivalent of 61 bits. That still requires18 quadrillionoperations, andNIST experts rate it "safe for decades".

Typical password setups

  • "password123" or "1234"
  • Birthdays and names combined
  • Cracked by dictionary attacks in hours to days
  • Effective security strength: extremely low

Memotto's cryptographic URL

  • 122 bits of cryptographic randomness
  • 5.3×10³⁶ possible combinations
  • Practically impossible to guess
  • Effective security strength: banking-grade

Built for moments like these

From casual sharing with family or friends to meeting minutes and project to-dos—Memotto turns "I want to share this note now" into reality fast.

Shopping and schedules with family

Share grocery lists, kids' schedules, and packing lists with the whole family in real time. Updates show up instantly.

Team meeting minutes

Use the minutes template to organize agendas, decisions, and action items. Send the URL and everyone can edit.

Travel and event planning

Collaboratively edit itineraries and packing checklists. Access history is kept so you can look back later with ease.

Study groups and club activities

Great for seminar summaries or running a club. Checkboxes and bullet lists keep tasks under control.

Frequently Asked Questions

Here are the questions we hear most often before people start using Memotto. For more, check our FAQ page.

Does it cost anything?

Everything is free right now. You can use collaborative editing and templates without any limits—just note that ads are displayed.

Where is my data stored?

Data is encrypted and stored on secure servers in Japan, and edits are reflected instantly. We also keep access logs to a minimum.

Can I edit from multiple devices?

Yes. As long as you open the same URL, you can edit simultaneously from PC, smartphone, or tablet.