CLUSTUDY

Name: CLUSTUDY
Author: SHIKAKURU INC.

LiveSHIKAKURU INC.1 app · 452 installsEducationFreeIn-app purchases: ¥500 - ¥1,800 per itemcom.clustudy.app.android

An AI-powered app for efficient learning of certification exams. It combines past questions, practice tests, exercises, and study records into one place.

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Total installs: 452
Installs / day: +21
Rating: —★
Released: 27 Jul 2026
Last update: 18 Sept 2026
Countries: 1/30

Installs per day

gain of the exact counter

Lifetime avg ≈ 6/day (all installs ÷ days since release)

Daily tracking since 10 Oct 2026 · history grows every day

Install history

exact counter from Google Play

3dAll

Dashed: estimate from the release date (no daily data before 10 Oct 2026) · time axis compressed before that day

Daily tracking since 10 Oct 2026 · history grows every day

Change timeline

2 changesFull history

13 Oct 2026 before
Content rating
EveryoneRated for 3+
13 Oct 2026 before
In-app prices
—¥500 - ¥1,800 per item

Country availability

Live 1Listed, not installable 29Not listed 0

United Arab Emirates

Argentina

Australia

Bangladesh

Brazil

Canada

Colombia

Germany

Egypt

Spain

France

United Kingdom

Indonesia

India

Italy

Japan

Kenya

South Korea

Mexico

Nigeria

Philippines

Pakistan

Poland

Russia

Saudi Arabia

Thailand

Türkiye

United States

Vietnam

South Africa

Show all 30 countries ▾Show top 5 only ▴

Top countries

estimate · charts of 11 Oct

Most downloads likely come from 🇯🇵 Japan (~100%).

Japan100%#72 Trending · Education

Estimated from top-chart positions weighted by each country’s Google Play market size. Countries where the app is not in a chart are not shown, so small markets may be missing.

Top chart positions

as of 11 Oct

Chart	Country	Rank	Change
Trending · Education	JP	#72	—

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

Shares data with third parties Photos and videos and App info and performance
Collects data Personal info, Photos and videos and 3 others
Data is encrypted in transit
You can ask for your data to be deleted

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

12 in 4 groups

6 Sensitive1 Notable5 Routine

What this app can do with your phone

Read photos, videos, and other files saved in your phone's shared storage
Add, change or delete photos, videos and other files in your phone's storage
See all events in your calendar, including details like guests, places and notes
Add, change or delete calendar events and email guests, without telling the calendar owner

CalendarSensitive2

Access to your calendar events and their details

See all events in your calendar, including details like guests, places and notesread calendar events plus confidential information · READ_CALENDAR
Add, change or delete calendar events and email guests, without telling the calendar owneradd or modify calendar events and send email to guests without owners' knowledge · WRITE_CALENDAR

Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

StorageSensitive2

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

OtherNotable6

Access to miscellaneous device features that don't fit other categories

Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Make your phone vibratecontrol vibration · VIBRATE
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
Receive push messages sent from the app's servers over the internetreceive data from Internet · com.google.android.c2dm.permission.RECEIVE

Read more · all 12 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

学びをつなぎ、未来をひらく。 CLUSTUDY（クラスタディ）は、AIを活用した資格試験学習プラットフォームです。【AIスマート演習】 AIが学習状況を分析し、理解度に応じた最適な演習を提供します。 - 苦手分野を重点的に学習 - 効率的な復習 - 学習効率を向上【教材・演習問題・模擬試験】 - 教材で基礎を学ぶ - 演習問題で理解を深める - 模擬試験で実力を確認【学習記録・AI分析】毎日の学習を自動で記録します。 - 学習時間 - 学習日数 - 正答率 - 苦手分野 - 学習履歴【学習コミュニティ】学習記録や勉強の進捗を共有し、仲間と交流できます。【名作読書】資格試験対策だけでなく、文学作品や名作を通して知識や教養を深めることができます。【こんな方におすすめ】 - AIを活用して効率よく学習したい - 資格試験に合格したい - 苦手分野を重点的に学びたい - 過去問を繰り返し学習したい - 学習を習慣化したい - 学習記録を管理したい - 仲間と一緒に勉強したい - 読書も楽しみたい【対応資格】 - ITパスポート - 宅地建物取引士（宅建） - 行政書士 - 管理業務主任者 - 賃貸不動産経営管理士 ※対応資格は順次追加予定です。 CLUSTUDYは、一人ひとりに最適な学習体験を提供するAI学習プラットフォームです。お問い合わせ https://clustudy.jp/contact FAQ https://clustudy.jp/faq プライバシーポリシー https://clustudy.jp/privacy 利用規約 https://clustudy.jp/terms

What's new

今回のアップデート内容・学習結果のシェア画面で発生していたUI表示の問題を修正しました。・「間違えた問題」と「ブックマーク問題」から、問題の詳細を個別に確認できるようになりました。・「間違えた問題」で分野を絞り込んで出題できるようになりました。・さまざまな形式の過去問を、より見やすく・解きやすく改善しました。・新機能「AIチューター」を追加しました！学習中の疑問や分からないことを、いつでも気軽に質問できます。ますます便利になったCLUSTUDYを、ぜひお試しください！ AIチューターは24時間いつでも待機中。夜中に質問しても、眠そうな顔はしません。

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