StudyJunkie vs KanjiStroke
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StudyJunkie
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StudyJunkie turns every app-opening moment into a study opportunity. Before you can open social media, games, or any app you choose, you must answer a quiz. Powered by iOS Screen Time (Family Controls), StudyJunkie puts a smart learning gate between you and distraction. HOW IT WORKS 1. Select apps you want to restrict 2. When you try to open them, a quiz appears 3. Answer correctly to unlock the app for your chosen duration QUIZ CATEGORIES - Math: auto-generated calculation problems (Jr. High / High School level) - English Vocabulary: 3,700+ words with audio (Jr. High, High School, TOEIC) - Pharmaceuticals: brand name and generic name matching - Custom: create your own questions for any subject FEATURES - 7 difficulty levels (Jr. High 1-3, High School 1-3, TOEIC) - Word memory tracking: words answered correctly 3+ times are marked learned - Combo system: keep your streak going! - ZONE mode: triggered at 5+ combos for a special effect - Detailed stats: total answers, accuracy, best streak, and more - Custom quiz creator: add any question you need - Bilingual UI: Japanese and English supported - No data collection: your study data stays on your device
KanjiStroke
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KanjiStrokeは、小学校で習う全1,026字の漢字を書き順アニメーションで学べる学習アプリです。 【主な機能】 ■ 書き順アニメーション 一画ずつ丁寧にアニメーションで表示。正しい書き順を視覚的に学べます。速度調整や一時停止も可能です。 ■ 漢字辞典 音読み/訓読み、画数、部首、熟語例をまとめて確認できます。学年別/画数順/部首順での並び替えや検索にも対応。 ■ 3種類のクイズ - 画数クイズ: 漢字の画数を4択で回答 - 読みクイズ: 漢字の意味を4択で回答 - 書きクイズ: 読みと熟語のヒントから漢字を手書き入力。書き順/形/画数を総合的に判定 ■ 学習進捗 クイズの成績を学年別に記録。どの漢字が得意でどの漢字が苦手か一目でわかります。 ■ 今日の漢字 アプリを開くたびに新しい漢字をピックアップ。毎日少しずつ漢字力を伸ばせます。 【対応範囲】 小学1年生から6年生までの教育漢字 全1,026字 【こんな方におすすめ】 - 漢字の書き順を正しく覚えたいお子さま - 漢字検定の書き取り対策をしたい方 - 日本語を学んでいる方 - お子さまの漢字学習をサポートしたい保護者の方
Screenshots
Verdict
StudyJunkie and KanjiStroke are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
StudyJunkie ships an update every 2 weeks, KanjiStroke every 10 days. Both last shipped on October 16, 2026.
| Parameter | StudyJunkie | KanjiStroke |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | KAZUHIRO KAMAKURA | SANWA Inc. |
In-app purchases
StudyJunkie
No in-app purchases
KanjiStroke
No in-app purchases









