Can't decide in shopping?
- Think a lot lost before buying?
- Lost in too many tabs while shopping?
- Hate using spreadsheets to compare price combinations?
- Sellers: want to create visual quotes with customers?
No matter how many reviews you read or how many products an AI suggests, it's on you to compare and decide the best for your purposes. That's where you get stuck and feel exhausted.
Banban Board™ helps you "compare clearly, decide easily" from these many options when choosing what to buy and working.
Quick Bookmark
Add more and more cards (banban!) from different stores, as you like.
Cards are instantly created with images, prices, and details.


Solo, with friends, or in your company
Invite others to your organization. Chat through messages and video meetings.

Coordinate Outfits
In vertical mode, you can mix and match tops and bottoms. You can also coordinate with clothes you already own.

Banban Calc
Arrange the cards to simulate like a spreadsheet — no formulas needed.
In face-to-face sales, you can create beautiful quotes on the spot.

Automatic Price Conversion
Supports "today's exchange rates" for 170 currencies.

What's this?
When buying something, Banban Board™ helps you "compare clearly and decide easily" to find the best option to buy for your purposes from all the choices you've researched through searches, reviews, or AI recommendations.
You can turn your internal thoughts — like “Which one is better?” or “What features does this have?” — into visible cards on your private board. You can organize your thoughts and make decisions.
Cards are seamlessly integrated with helpful features like the item Comparator™, the smarter Banban Calc, Happy the AI dog, and more.
Banban Board™ is a unique tool you've never seen before—it's not a shop, social media, a comparison site, or a decision-making tool, but one that supports you from your initial stage to your final decision.
Use it solo, or share with remote friends and family in your organization — everyone can move cards to propose ideas.
It's simple to use. Start by bookmarking products banban (more and more) from different shops or reviews into cards. Then, move better cards to higher rows, and within a row, toward the left. The top-left card is your choice.
What can I do with moving the cards?
The features are integrated with the cards and work seamlessly.
- Bookmark product pages with prices and images — the Quick Bookmark.
- Prioritize product cards and ideas.
- Compare products from multiple shops side by side — the Comparator™.
- Coordinate clothes — Vertical View.
- View foreign prices in your currency — the Price Converter.
- Compare combinations such as cars with options and travel plans including total prices.
- Calculate cards like a spreadsheet (even without formulas!) — Banban Calc.
- Present while building a visual quote during selling — Banban Calc.
- Manage budgets — Banban Calc.
- Manage tasks in Kanban-style.
- Use built-in video meeting with Banban board.
- Assisted by AI — friendly Happy the AI dog. (Coming soon)
- Add new features in JavaScript — Banban Script (Coming soon).
When you are not sure what to buy, just use Requests to ask on the map for offers.
Free for individuals, no per-user monthly fees
Individuals: Basic features are free, with no monthly fees per user. If you go beyond the free tier limits, such as the number of data items or AI usage, affordable pay-as-you-go options are available.
Business: A low-cost pay-per-use model with no per-user monthly fees. A free tier is also available.
Fees?
Free for individuals who do not receive compensation, with some paid options. For business organizations, low-cost pay-per-use with a free tier — no monthly fees per user.
Requestland and The Project
This feature is part of Requestland and The You Can Upgrade the Economy Yourself and Increase Everyone’s Income Project (The Jibu-Kei Project).
Users are participants. With this new technology, we aim to reduce growing economic inequality, increase everyone's (your) income, and encourage local economies.
Platform Features Available in Requestland

Meet within your org or with sellers — video for up to 3, audio for up to 10. No sign-up needed — just share the URL.












Who's working on it?
We are a team of researchers and students from the National Institute of Advanced Industrial Science and Technology (Japan), the University of Tsukuba, the University of Tokyo, and others.
We founded the social startup Peace and Passion — not for profit, but to realize a future where everyone can live with peace of mind and passion.
Privacy?
Boards are private — this isn't social media.
Use solo or with remote friends and colleagues. You'll create your org (organization) when registering, and can invite others. Boards and messages stay within your org. No messages come from outside orgs.
Log in with passkeys using touch or face recognition. Users love its ease and security — no passwords needed.
We never share your personal data with third parties like ad networks.
Countries? Devices?
Available in about 190 countries. Requests supports 37 languages and about 170 currencies. It's in beta testing.
As it's a web app, available on both smartphones and computers with no installation required. Use "Add to home screen" to make it an app.
Is it for sellers?
Yes. For face-to-face sales ninjas, beautifully explain your products and simulate pricing for combinations with your customers.
If you create a new organization and invite your customers, they can simulate prices on their own until they’re fully satisfied. This will likely reduce discount requests.
Procurement and purchasing considerations become more efficient, along with internal decision-making.
How to Use
- User Registration
- Banban Board Tutorial — Basic
- Banban Board Tutorial — Calculation
- Manual
- Instructions for Sellers
Innovative technologies behind Requestland
This includes internationally patented technologies developed by Peace and Passion, the National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba University, the University of Tokyo, Keio University, Ibaraki University, and their researchers and students.
Image Credits Please let us know if there are any issues.