スタディブースター vs Simple Study Stamp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
スタディブースター
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2分で着火、25分で加速! やる気が出ない時でも「たった2分」から始められる、革新的な学習タイマーアプリ 主な機能 • 2分スターター: 取りかかりのハードルを最小化 • 自動ポモドーロ移行: 2分後にそのまま25分集中モードへ • 視覚的な学習ログ: 毎日の2分着火回数とポモドーロ完了数を記録 • 割り込み対応: 急な用事でも柔軟に再開・やり直し • 習慣化サポート: ストリーク機能で継続をゲーミフィケーション こんな方におすすめ • 勉強を始めるのが億劫な受験生・資格学習者 • 在宅ワークで集中力を高めたい方 • 短時間でも効率的に学習したい忙しい社会人 • ポモドーロテクニックを習慣化したい方 "心理学的アプローチ"から着想 「2ミニッツスターター」とポモドーロテクニックを融合。心理学的根拠に基づいた学習開始の仕組みで、毎日の勉強を無理なく継続できます。 シンプルで使いやすいデザイン 直感的な操作で、学習開始まで最短3タップ。バックグラウンド動作対応で、他のアプリを使いながらでもタイマーが継続します。 本アプリは、受験勉強や資格試験、語学学習など、 幅広い分野の学習・集中作業に活用できます。 学習内容やテーマはユーザーが自由に設定できます。 学習の悩みを解決 「やる気が出ない」→ たった2分だけなら今すぐ始められます 「集中力が続かない」→ 25分区切りで無理なく継続できます 「勉強習慣がつかない」→ 毎日の記録とストリーク機能で自然と習慣化 「時間がない」→ スキマ時間の2分から有効活用 「何から始めればいいかわからない」→ まずは2分、教材を開くだけでOK 「すぐに諦めてしまう」→ 小さな成功体験の積み重ねで自信がつきます 「長時間勉強が苦手」→ 短時間集中を繰り返して効率アップ 「勉強が嫌い・つまらない」→ ゲーム感覚のストリーク機能で楽しく継続 あなたの学習スタイルに合わせて 完璧主義で始められない方:まずは2分だけの気軽なスタート 集中力に自信がない方:25分区切りの無理のない学習リズム 忙しい社会人の方:スキマ時間を最大限活用する効率的学習 学習習慣を身につけたい方:毎日の記録で成長を実感しながら継続 モチベーション維持が苦手な方:ストリーク機能とグラフで達成感を味わいながら学習
Simple Study Stamp
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Your study time is more than just a number. Keep your goals—and your current study session—visible right from your Home Screen and Lock Screen. Simple Study Stamp is a simple yet practical study time tracker with stopwatch, timer, and manual entry. With widgets, you can quickly check: • Time remaining until your goal date • Total study time • Target study time • Progress percentage And while a timer or stopwatch is running, you can check your current study status directly from the Lock Screen. Even after leaving the app, you can instantly see whether a study session is still running and how long you’ve been studying. Stay aware of your study session. Stay focused on your goal. Simple Study Stamp is designed to make consistent studying easier. See your progress at a glance Your study time is automatically organized by day, week, month, and year. Use easy-to-read bar charts and pie charts to see what you’ve studied and how much time you’ve spent on each subject. The calendar view also makes it easy to look back and see: “How much did I study that day?” “How much have I accomplished this month?” Your effort doesn’t disappear—it becomes a visible record of your progress. Track your way Choose the recording method that fits your study style: • Stopwatch • Timer • Manual entry Whether you’re studying at your desk, learning a language on your commute, reading, preparing for an exam, or working on professional development, you can record your study time in the way that works best for you. Keep your goals visible Set a target study time and goal date for each subject. Instead of simply recording study hours, Simple Study Stamp helps you stay aware of how far you’ve come and how far you still have to go. Home Screen and Lock Screen support make your goals easier to remember throughout the day. Great for • Exam preparation • Certifications • Language learning • Reading • Programming • Professional development • Self-study and lifelong learning No complicated setup. No unnecessary features getting in your way. No in-app purchases. Just open the app, start studying, and keep building your progress one session at a time. One minute today can make a big difference tomorrow. Make every minute count.
Screenshots
Verdict
The clearest difference is ads: スタディブースター at none against Simple Study Stamp's shown. スタディブースター also leads on update cadence (daily vs every 11 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.
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.
スタディブースター ships an update daily, Simple Study Stamp every 11 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | スタディブースター | Simple Study Stamp |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 11 days |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | arai.me | Futoshi Akahoshi |
In-app purchases
スタディブースター
No in-app purchases
Simple Study Stamp
No in-app purchases
Questions
Is スタディブースター free?
Is Simple Study Stamp free?
Do スタディブースター or Simple Study Stamp have ads?
Which is updated more often, スタディブースター or Simple Study Stamp?
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