# AI Study Sheet - Active Recall — Mask Key Terms in Notes & PDFs

> Mask Key Terms in Notes & PDFs (iPhone/iPad app by Masaki Iino.)

- Source: https://appshunter.io/ios/app/ai-study-sheet-active-recall/id6782023263 (this page in markdown: same URL + `.md`)
- Developer: [Masaki Iino](https://appshunter.io/developer/6778272211)
- Category: Education, Books
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-06-23
- Data updated: 2026-09-10
- User reviews in markdown: https://appshunter.io/ios/app/ai-study-sheet-active-recall/id6782023263/reviews.md

## What is AI Study Sheet?

Study directly from the materials you already use.

AI Study Sheet turns textbooks, worksheets, lecture notes, screenshots, photos, and PDFs into active-recall study sheets by automatically selecting and masking important terms.

There is no need to manually choose every word to hide or rebuild your materials as flashcards.

Import your study material and start recalling what matters.

TURN YOUR MATERIALS INTO STUDY SHEETS

Scan a page, select photos, or import a PDF.

・Scan textbooks, worksheets, and notes
・Import multiple photos at once
・Import PDFs with up to 20 pages
・Keep the original text, diagrams, tables, and page layout

No need to recreate your study materials in another format.

KEY TERMS ARE SELECTED AUTOMATICALLY

AI Study Sheet analyzes your material and identifies words and concepts worth remembering.

Instead of manually highlighting or masking every important term, the app automatically prepares the page for active recall.

It works with school, university, certification, and professional study materials.

CONTROL HOW MUCH IS HIDDEN

Choose the amount of masking that fits your study stage:

・Less
・Standard
・More
・Before Exam

Start with fewer masks while learning new material, then hide more as an exam approaches.

You can also remove automatically selected masks or add your own.

RECALL FROM THE ORIGINAL CONTEXT

Unlike traditional flashcards, AI Study Sheet keeps the material you already recognize.

The surrounding text, diagrams, tables, and page structure remain visible while key information is hidden.

Reveal the full page when you need the answer, then turn the masks back on and try again.

TRACK WHAT YOU REMEMBER

After studying, mark each material as:

・Remembered
・Unsure
・Not Remembered

Saved materials stay organized in your Library, making it easy to return to topics that still need review.

FOR SCHOOL, UNIVERSITY, AND PROFESSIONAL STUDY

Use your own materials for:

・School and university exams
・Entrance exam preparation
・Everyday revision
・Language learning
・Professional certification exams
・Accounting, finance, legal, and IT study
・Workplace training and professional learning

AI Study Sheet is not tied to one subject or exam. If it is something you need to remember, you can study it from the material you already have.

PRIVATE BY DESIGN

Your study images and recognized text are processed on your device.

Your materials do not need to be uploaded to an external server, and no account or sign-in is required.

START FREE

Save up to 3 study materials to get started.

Complete your first study session to expand the free allowance to 10 saved materials.

If you need more, Unlimited Saves is available as a one-time purchase.

No subscription required.

Spend less time preparing study materials and more time remembering what matters.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlimited Saves | $4.99 | one-time |



## Version history (last 5 releases)

### v2.7.0 — 2026-09-08

We’re continuously improving the app to make studying easier and more intuitive.

• See recommended materials to review based on your learning history
• Start a recommended review with fewer steps
• Get optional reminders when it may be a good time to review again
• Improved wording and usability across the Library and Settings screens

### v2.6.1 — 2026-08-31

You can now apply the latest automatic key-term selection to study materials created in earlier versions.

• Refresh automatic masks using the latest selection logic
• Manually added or excluded masks are preserved
• Refined app naming and internal processing for improved consistency and reliability

### v2.6.0 — 2026-08-28

・Expanded the study vocabulary used to identify important terms
・Improved key-term analysis for a wider range of study materials
・Optimized analysis performance for faster processing
・Improved internal processing and app launch stability

### v2.5.1 — 2026-08-20

• Complete your first study session to expand the free save limit to 10 materials
• Added well-timed App Store rating requests for active learners
• Improved purchase restoration reliability
• Improved wording and guidance throughout the study flow
• Additional usability and stability improvements

### v2.5.0 — 2026-08-19

• Improved the first-use flow from importing study materials to starting a quiz
• You can now start studying immediately after saving your materials
• Added optional review reminder notifications every 30 days
• Improved purchase and restore reliability

## Apps similar to AI Study Sheet

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [全国通訳案内士試験ー地理・歴史・一般常識・実務の過去問題解説](https://appshunter.io/ios/app/id6744575698) | — | Free | Education |
| [Memorize long sentences](https://appshunter.io/ios/app/memorize-long-sentences/id1535884855) | 1.0 (2) | Free | Education |
| [Instituto global de DTS](https://appshunter.io/ios/app/instituto-global-de-dts/id6480136495) | — | Free | Education |
| [Stackd: Study Timer & Tracker](https://appshunter.io/ios/app/stackd-study-timer-and-tracker/id6761293821) | — | Free | Education |
| [MasteryAI: Feynman AI Study](https://appshunter.io/ios/app/masteryai-feynman-ai-study/id6756033151) | 5.0 (2) | Free | Education |
| [SmartRedFilter](https://appshunter.io/ios/app/smartredfilter/id6771782559) | — | Free | Education |

## More apps by Masaki Iino

- [Meet Here Card](https://appshunter.io/ios/app/meet-here-card/id6778307049)
- [Art Spot: Find Differences](https://appshunter.io/ios/app/art-spot-find-differences/id6778668992)
- [ゆる断写](https://appshunter.io/ios/app/id6778803977)
- [Find It. Show It.](https://appshunter.io/ios/app/find-it-show-it/id6779887145)
- [AIライフスタイルマッチング](https://appshunter.io/ios/app/ai/id6780207604)
- [VoicePocket（ボイス・ポケット）](https://appshunter.io/ios/app/voicepocket/id6781123231)

All apps by Masaki Iino: https://appshunter.io/developer/6778272211

---

*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 2026-09-10.*