App Intel

赤シート英単語帳 - 語源で覚える英単語

LiveKoyamaAtsushi50 apps · 475.6K installsEducationFreecom.koyama.redsheetandroid

Completely free and ad-free. This learning app allows you to efficiently memorize TOEIC and Eiken English vocabulary by learning its etymology.

Alert me★ WatchOpen in Play ↗
Total installs
17,446
exact · Play shows 10,000+
Installs / day
—
measured after our second crawl (about a day)
Rating
—★
— ratings · — reviews
Released
30 Mar 2026
6mo ago
Last update
20 May 2026
v4.0 · 5mo ago
Countries
—
not checked yet

Install history

exact counter from Google Play
17K17.8K18.5K19.3K20K11 Oct12 Oct12 Oct
17K17.8K18.5K19.3K20K11 Oct12 Oct12 Oct

Installs per day · last 90 days

Not enough history yet — check back tomorrow

Change timeline

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

estimate · charts of 12 Oct

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

  1. Japan100%#151 Top free · 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 12 Oct
ChartCountryRankChange
Top free · Education JP#151▲ 15

App manifest

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

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • No data shared with third parties
  • No data collected

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

6 in 1 group
0 Sensitive2 Notable4 Routine
OtherNotable6

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

  • Start itself automatically as soon as your phone finishes turning onrun at startup · RECEIVE_BOOT_COMPLETED
  • 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
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
  • Read Google service settings stored on your deviceread Google service configuration · com.google.android.providers.gsf.permission.READ_GSERVICES

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

Full description
【完全無料・広告なし】語源で覚える英単語アプリ 赤シート単語帳は、TOEIC・英検の英単語を「語源」から効率的に覚えられる学習アプリです。 すべての機能が完全無料・広告なし。課金要素は一切ありません。 ◆ 語源で「なぜその意味になるのか」がわかる 単語を丸暗記するのではなく、接頭辞・語根・接尾辞から意味の成り立ちを理解できます。 例:current curr-(ラテン語 currere = 走る) 「流れ走るもの」→ 流れ・電流・現在の 一度理解すれば、currency・occur・concur など関連語も芋づる式に覚えられます。 ◆ 5つの学習モード ・4択クイズ … テンポよく意味を確認 ・赤シート … 日本語を隠して一覧で暗記 ・集中テスト … 苦手な単語を重点的に ・タイムアタック … 制限時間で実力を測定 ・ライティング … スペルを書いて定着 ◆ 対応レベル 【TOEIC】600点 / 800点 / 990点 【英検】3級 / 準2級 / 2級 ◆ 学習サポート機能 ・音声読み上げ(速度調整可能) ・学習データ・統計の可視化 ・1日の目標単語数・週間目標の設定 ・連続学習日数の記録 ・英→日 / 日→英の表示切り替え ・カスタム単語帳の作成 ・既存の単語帳への単語追加 ・通知リマインダー ◆ こんな方におすすめ ・TOEIC 600〜990点を目指している方 ・英検3級〜2級を受験予定の方 ・丸暗記が苦手で、語源から理解したい方 ・無料で広告なしのアプリを探している方 ・毎日コツコツ続けたい方 ◆ なぜ無料なのか 開発コストを極限まで抑えた個人開発のため、完全無料・広告なしで提供しています。 すべての単語帳・学習モード・語源データを無料・無制限でご利用いただけます。 ご質問・ご要望はアプリ内の「お問い合わせ」からお気軽にどうぞ。

What's new

単語選択時のDXを改善しました!

Growing in Education

Category →