Passim|蔵書管理・本棚整理・読書記録

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Everyone
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About this app

A bookshelf management app for people who use books as tools for work and study.

Researchers, graduate students, exam takers, those aiming for certifications, writers, editors—for those who repeatedly buy, use, and discard books for work and learning.

Existing apps are either "reading record SNS" or "manual input management tools."

Passim is different. A practical bookshelf management and reading record app for people who use books as tools.

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◆ Register in 3 seconds
Simply scan the barcode to automatically retrieve book information.

Take a picture of your bookshelf with your smartphone, and the AI ​​will read the spines and register them all at once.

No more manual input required.

◆ Organize by project
Writing papers, studying for certifications, exam preparation, new business research, serial projects—
Link books to each project to keep track of what you've read and how far you've progressed.

Textbooks, reference books, and workbooks can be organized by study, and reference notes (e.g., "p.142-155 Chapter 3 is the core") can be left.

◆ Know where it is
Home, lab, parents' house, warehouse, currently on loan.
Record the current location of your books to eliminate the "Where did I put that book?" problem.
Track missing books with the "Searching" status.

◆ Record of letting go of books
Sell, donate, discard, transfer. The history of books you've let go of is also recorded in Passim.
Manage the status of your listings on flea market apps like Mercari, Rakuma, and Yahoo! Auctions.
It can also answer the question, "Did I have this book before?"

◆ AI helps with organization
Automatic tag generation and one-line summaries. AI handles the tedious classification work.
With the Pro plan, you can search across your collection with fuzzy searches like "easy-to-read mysteries."

◆ Manage series and loans
Manage long series in one place.

Reminders for borrowed books' return dates.

◆ Designed to protect your data
Your comments and notes are not used for AI training.
Deleted books can be recovered from the trash for 7 days with Pro, so you won't lose important records.

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■ Plans

【Free】
Try it with 50 books first. You can use all of Passim's basic functions.

【Pro】¥500/month
Unlimited books. High-precision scanning. Fuzzy AI search.
Deleted books can be recovered from the trash for 7 days.
The main bookshelf management tool for people who use books regularly.
Even more savings with an annual fee of ¥4,500.

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Passim is a bookshelf app for professionals that records the life cycle of books—"Stack, Use, Let Go"—
Start for free.

Developed by: MODALAVA (AI Agent Development)
Passim was developed using MODALAVA's proprietary AI agent short-term development sprint.
"I want to create an app like this." Contact us here → https://www.modalava.com/ai-agent-dev
For research, qualifications, and exams. A book management and reading record app for people who use books as tools. Textbooks and reference books can be grouped by project and registered with barcodes.
Updated on
Sep 1, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Financial info, App activity and 2 others
  • This app may collect these data types
    Personal info, Financial info and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

本の登録まわりを、より使いやすくしました。

◆ 使い勝手の改善
・本の登録画面で、保存場所やプロジェクトの設定がより分かりやすくなりました
・登録済みの本を見分けやすく調整しました

◆ 不具合修正
・本の追加直後にアプリが終了することがある問題を修正しました
・一部の操作で本の追加が画面に反映されないことがある問題を修正しました
・そのほか、細かな改善と安定性の向上
Content rating
Everyone
In-App Purchases
Learn more

App support

About the developer
MODALAVA INC.
ceo@modalava.com
2-2-15, HAMAMATSUCHO HAMAMATSUCHO DIA BLDG. 2F. MINATO-KU, 東京都 105-0013 Japan
+81 80-8701-9932