# inf6 — Structured knowledge browser

> Structured knowledge browser (iPhone/iPad app by hiroji nishi.)

- Source: https://appshunter.io/ios/app/inf6/id6748942148 (this page in markdown: same URL + `.md`)
- Developer: [hiroji nishi](https://appshunter.io/developer/1806564311)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 268 MB
- Released: 2026-02-27
- Data updated: 2026-09-07
- User reviews in markdown: https://appshunter.io/ios/app/inf6/id6748942148/reviews.md

## What is inf6?

inf6 is an AI knowledge system for structuring academic papers and professional knowledge so you can understand, retain, and reuse what you learn.

Your library and generated research assets are stored in iCloud Drive under your Apple ID. Continue reading on iPhone, editing on iPad, and working on Mac without breaking the flow. Saved files remain visible in Files and Finder.

From reading to reusable research assets:

• Generate paper-level abstracts.
• Create page- or selection-based explanations while reading.
• Capture key equations as formula cards saved as mini PDFs.
• Search, highlight, edit, and refine your understanding over time.

Paper Drills

Connect syllabus leaf nodes to their verified source papers. Measure understanding with exercises generated from figures, tables, and equations. Related understanding points from the same source visual are grouped together instead of repeating the visual.

AI Features (Optional)

inf6 can generate summaries, explanations, figure/table analysis, and quizzes using OpenAI. AI features require an OpenAI API key configured in the app. Content is sent to OpenAI only when you explicitly run an AI action; there is no automatic background upload. The API key is stored in the Keychain.

Supported Domain

• JDLA E-Qualification (Deep Learning Engineer)
• Expanding to G-Certification, Azure AI, and other professional domains

From preserving knowledge to creating what comes next.


## Version history (last 5 releases)

### 1.7 — 2026-08-25

Build 58 updates the learning workflow:

• Live BP now starts with a 17-second display interval.
• Exercises explain the understanding point instead of asking for a guess.
• Points linked to the same figure, table, or equation are grouped together without repeating the visual.
• Figure text is scaled for readability.
• Source-paper verification, textbook-domain explanations, explanation launchers, PDF opening, and latest-version checks were refined.
• Fixed generation-position drift, blank scroll areas, and startup synchronization errors.

### 1.6 — 2026-08-19

演習を「解いて当てる」形式から「正しい内容を理解する」形式へ作り直しました。

・4択をやめ、理解すべきポイントとその解説を提示する形に変更
・同じ図・表・数式に紐づくポイントを1か所へ集約し、図の重複表示を解消
・図中の文字が本文と同じ大きさで読めるよう、表示サイズを自動算出
・論文要旨に arXiv 原文を採用し、日本語モードでは全文を和訳して表示
・コア理論と理解ポイントを箇条書き化し、E資格で必要な要点に限定
・起源論文の特定を、検索ではなく実在確認にもとづく方式へ刷新
・起源論文を持たない教科書的分野にも、独自解説と演習を生成
・各ポイントに解説ランチャーを追加(さらに詳しく／用語／具体例／順を追って)
・論文PDFを別ウィンドウで開けるようにし、新しい版の有無も確認
・生成中の表示位置ずれ、スクロールの白抜け、起動時の同期エラー表示を修正

### 1.4 — 2026-08-11

演習問題生成を刷新しました。論文の中核理論に結び付く図・表・数式を構造化して選定し、根拠画像と問題内容の対応を検証します。PDFKitとVision OCRを併用した図表検出、画像の再クロップ、ピンチズーム、概要解説の一貫した保存、ドメイン表示と生成処理の進捗・キャンセル・キャッシュ処理も改善しました。

### 1.3 — 2026-08-08

inf6 is an AI-powered academic learning platform that sits at the boundary between known and unknown knowledge.

Key Features:
• Interactive Knowledge Graph — Visualize research domains as Venn diagrams. Tap to explore papers, concepts, and connections.
• AI-Generated Explanations — Get concise, citation-backed overviews of academic topics, with full figure, table, and equation analysis.
• Quiz Mode — Test your understanding with AI-generated quizzes that reference actual paper visuals — figures, tables, and equations displayed inline.
• PDF Library — Import and read academic papers with an integrated viewer and sidebar navigation.
• iCloud Sync — All your data, quizzes, and progress sync seamlessly across devices.

Built for researchers, students, and lifelong learners who want to go beyond summaries and truly understand the literature.

### 1.2 — 2026-03-15

Version 1.2 improves reliability and clarity across the reading-to-research workflow.

Added versioned prompt governance for AI features to improve output consistency.
Improved explanation generation with clearer Local RAG vs External Web modes.
Enhanced note card, quiz, and formula-card generation flows.
Strengthened error handling and overall stability for iCloud-backed workflows.

## More apps by hiroji nishi

- [CubicCross](https://appshunter.io/ios/app/cubiccross/id6744233563)

All apps by hiroji nishi: https://appshunter.io/developer/1806564311

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*