# SentenceBox — Turn Textbooks into Flashcards

> Turn Textbooks into Flashcards (iPhone/iPad app by Kouichi INAFUKU.)

- Source: https://appshunter.io/ios/app/sentencebox/id6794504718 (this page in markdown: same URL + `.md`)
- Developer: [Kouichi INAFUKU](https://appshunter.io/developer/438372899)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 5 MB
- Languages: American English, Japanese
- Released: 2026-08-27
- Data updated: 2026-10-26

## What is SentenceBox?

SentenceBox makes it easy to create study cards from textbooks, workbooks, handouts, and other learning materials.

Simply take a photo of your study material or choose an image from your device. SentenceBox recognizes the text and helps you turn it into study cards.

Create cards for English sentences and translations, vocabulary and definitions, questions and answers, or anything else you want to memorize.

Spend less time typing and more time learning. Build your own collection of study cards from the materials you already use.

【Create Study Cards from Your Materials】
Take a photo of a textbook, workbook, handout, or other study material, or select an existing image. SentenceBox recognizes the text automatically.
Review and edit the recognized text, pair questions with answers, and save them as study cards.

【Create and Organize Your Cards】
Organize your cards into study sets for different subjects or learning goals.
SentenceBox can be used for language learning, vocabulary, memorization, and many other types of study.

【Review and Practice】
Study your cards repeatedly while checking questions and answers.
Mark each card as “Forgot,” “Not Sure,” or “Remembered” to keep track of your learning progress.
You can also type your answers, making SentenceBox useful for practicing English sentences, spelling, and recall.

【Text-to-Speech】
SentenceBox can read the text on your cards aloud.
When studying languages such as English, you can listen to sentences and pronunciation while you learn.

【Backup】
Back up the study data you create and restore it when needed.

【Free Version】
The free version lets you try the core features of SentenceBox with the following limits:
• Up to 3 study sets
• Up to 20 cards per study set
If you need more study sets or cards, you can remove these limits with an in-app purchase.

Turn the materials you already have into your own study cards with SentenceBox.

Use your textbooks, workbooks, handouts, and other learning materials to make everyday study and review easier.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| フルパッケージ | $5.99 | one-time |


## Is SentenceBox safe?

Not enough ratings yet to assess SentenceBox.

## Is SentenceBox legit?

SentenceBox appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SentenceBox is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-08-28

No release notes.

## More apps by Kouichi INAFUKU

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- [Full of music Free](https://appshunter.io/ios/app/full-of-music-free/id461578295)
- [Japanese Lesson-Kodomo letter](https://appshunter.io/ios/app/japanese-lesson-kodomo-letter/id505397530)
- [Learn Japanese Time](https://appshunter.io/ios/app/learn-japanese-time/id682203827)
- [VoiceDiary - voice recorder](https://appshunter.io/ios/app/voicediary-voice-recorder/id975010774)

All apps by Kouichi INAFUKU: https://appshunter.io/developer/438372899

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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 2026-10-26.*