StudyMgr vs Debt Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StudyMgr
This app helps you focus on studying by limiting phone usage and employing the Pomodoro Technique. It aids in goal setting, progress tracking, and visualizing learning outcomes to build confidence and prevent addiction.
- Smartphone usage restriction
- Goal and plan management
- Pomodoro Technique timer
- Visualize learning outcomes
- Progress tracking
- Customizable study plans
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StudyMgr (Study Manager) is a study timer app designed for those who are serious about learning. It provides an environment that helps you stay laser-focused on your studies. ■ 4 Reasons Why Your Studies Will Accelerate Incredibly 1. Prevent smartphone addiction We limit smartphone use during study time, maximizing your concentration. You'll be able to study efficiently even in short periods of time. 2. Solid management of goals and plans You can easily create a study plan tailored to your goals. Leave all progress management to the app. Achieve continuous learning without overexertion. 3. Pomodoro Technique Your lack of concentration is a matter of method. We maintain your focus with an effective learning method that alternates between concentration and breaks. 4. Visualize learning outcomes You can easily review your study time and consecutive days of study through graphs and calendars. Use this to build confidence in your efforts. ■ Who is this app recommended for? This app is ideal for those who find it "difficult" to study steadily towards a goal. "I have the motivation, but I just can't seem to keep it up." "I easily get distracted and lose my concentration." "I feel like I just don't have the focus in me." "I can't seem to sustain my enthusiasm, and it's so frustrating." "I want to study efficiently, but it just doesn't work out that way." StudyMgr resolves these nagging feelings and experiences of defeat. The Pomodoro timer and progress tracking features enable continuous learning without strain. The smartphone usage restriction also helps boost your concentration, allowing you to study efficiently even in short sessions. ■ What kind of learning can you use it for? Designed for a wide range of applications, from school studies to skill development, morning routines, reskilling, and hobby progress tracking. For example: - Schoolwork (Math, Science, History, etc.) - Exam preparation - Foreign language learning (e.g. Spanish, French, Mandarin) - AI, Programming - Certification courses - Instrument practice - Reading StudyMgr is here to support you, the serious learner, all the way.
Debt Clock
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Debt Clockは、ただ時間を計るだけのタイマーではありません。あなたが設定した「理想のペース」と「現実の行動」の差分を計算し、サボった時間を「負債(Debt)」として可視化します。 負債を抱えたまま一日を終えるか、それとも完済してスッキリ眠るか。 あなたの自己規律が試される、全く新しい習慣管理ツールです。 【主な機能】 ・Time Debt System(時間負債システム) 目標時間に対して作業が遅れると、その差分が「負債」として積み重なります。負債を返済(リカバリー)するために、あなたはより集中する必要が出てきます。ゲーム感覚で自分を律しましょう。 ・Neo-Brutalism Design 流行の「ネオ・ブルータリズム」を取り入れた、高コントラストで力強いデザイン。余計な装飾を削ぎ落とし、あなたの集中力を極限まで高めます。 ・Fluid Wave Animation 時間の経過を「波」のアニメーションで表現。数字だけでなく、直感的に残り時間を感じることができます。ホーム画面ウィジェットにも対応。 ・Streak & Graph 継続日数(ストリーク)と日々のパフォーマンスをグラフ化。あなたの頑張りを視覚的に記録し、モチベーションを維持します。 ・Focus on Privacy 会員登録不要。すべてのデータはあなたの端末内に保存されます 利用規約 https://button-hardboard-dd1.notion.site/Debt-Clock-2026-2-4-2fdc16d080408079b377c256090ac220?source=copy_link プライバシーポリシー https://button-hardboard-dd1.notion.site/Debt-Clock-2026-2-4-2fdc16d080408079b377c256090ac220?source=copy_link
Screenshots
Verdict
The clearest difference is update cadence: Debt Clock at every 2 days against StudyMgr's every 3 months. Debt Clock also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support 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. StudyMgr sells 2 in-app purchases, starting at $4.99 per month and Debt Clock sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
StudyMgr ships an update every 3 months, Debt Clock every 2 days. The most recent releases landed on September 23, 2026 and October 1, 2026 respectively.
| Parameter | StudyMgr | Debt Clock |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 66 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroaki Abe | Kanta Osumi |
In-app purchases
StudyMgr
- Pro(monthly)$4.991 Month
- Pro(Annual)7 Days trial$29.991 Year
Debt Clock
- プレミアムプラン(月額)$1.991 Month
- プレミアムプラン(年額)7 Days trial$14.991 Year









