# 質問解決 D.B.

> Just take a photo and get AI math explanations

Canonical page: [https://chrome-stats.com/d/com.needs.kaiketsudb](https://chrome-stats.com/d/com.needs.kaiketsudb)

## Overview

- **ID:** `com.needs.kaiketsudb`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** 株式会社ニーズ
- **Category:** EDUCATION
- **Downloads:** 38
- **Last updated:** 2026-07-26
- **First published:** 2026-07-26
- **Publisher country:** JP
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.needs.kaiketsudb)
- **Website:** [https://ne-ed-s.jp](https://ne-ed-s.jp/)
- **Privacy policy:** [https://kaiketsu-db.net/privacypolicy/](https://kaiketsu-db.net/privacypolicy/)

## Description

&quot;Question Solving D.B.&quot; is a learning app that combines the latest generative AI with over 20,000 explanatory videos.<br><br>Just take a photo of the math problem with the app.<br><br>The AI instantly recognizes the problem and carefully presents step-by-step thinking, how to choose a formula, and key points.<br><br>You can also deepen your understanding by tapping the abundant learning videos accumulated in &quot;Question Solving D.B.&quot; for elementary school students, high school students, and exam preparation.<br><br>Main functions<br>1. AI analysis<br>Just take a photo of the problem with the camera and it will automatically recognize it and carefully explain the intermediate steps and key points. It also supports self-study.<br><br>2. Teaching material/unit search<br>Instantly filter related videos from textbook chapters and units to quickly obtain the video you need.<br><br>3. Search by teacher<br>List videos by popular instructors and cram school channels. Choose the explanation style that suits you.<br><br>4. Recommended videos<br>You can watch recommended pick-up videos at any time.<br>5. History<br>The solved problems and explanations are automatically saved, making it ideal for reviewing before a test.<br><br>How to use (3 easy steps)<br>Shoot - Take a picture of the math problem you want to solve with your camera<br>Check - AI generates the intermediate steps and explanations in a few seconds<br>Understand - Watch related videos to solidify your knowledge<br><br>Operating company<br>https://kaiketsu-db.net/company/<br><br>Privacy policy<br>https://kaiketsu-db.net/privacypolicy/

## Rankings

- #2,356,952 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.needs.kaiketsudb)