Debt Clock vs Forgetting Curve Reminder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Forgetting Curve Reminder
This app helps you remember what you learn by scheduling reviews based on the Ebbinghaus forgetting curve. Create study items, receive timely reminders, and track your progress with ease. All your data is stored locally for enhanced privacy.
- Scientific review scheduling
- Local reminders
- Progress tracking
- One-tap completion
- Review history
- Customizable intervals
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Forgetting Curve Reminder is a scientific review planner based on Ebbinghaus’s forgetting curve. It reminds you on every review day. When reviews are still waiting, the Overdue Reminder and the optional Second Reminder let you know again, so a missed review doesn’t go unnoticed. WHO IS THIS FOR? - Students preparing for exams - Language learners memorizing vocabulary - Professionals studying for certifications - Anyone who wants to remember what they learn KEY FEATURES - Create study items and auto-generate review schedules (1, 3, 7, 14 and 30 days later by default) - Get a notification on each review day at the time you choose - Overdue Reminder: on days with overdue reviews, one reminder at your notification time tells you how many there are (you can turn it off in Settings) - Second Reminder: turn it on to get one more reminder at a time you choose when the day’s reviews aren’t done (off by default; preset to 8:00 PM) - Check today’s tasks and progress at a glance - Mark reviews complete with one tap - The memo field grows with your text, and the item screen shows the whole memo: select and copy any part, and tap links to open them - Add your own categories and delete the ones you don’t need, even the built-in English, Math and Certification (you can bring them back later) - Category changes reach your other devices through iCloud - Look back on your review history - See each item’s forgetting curve as a chart - Track your last 7 days and your streak - Set the number of reviews (3 to 7) and the day of each one (1 to 365 days after you add the item) PRIVACY FIRST - Data stays on your device and in your private iCloud - No account registration required - No ads and no tracking
Screenshots
Verdict
The clearest difference is price: Debt Clock at Free against Forgetting Curve Reminder's $1.99. Debt Clock also leads on iOS requirement (13.0 vs 17.0). Forgetting Curve Reminder's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence 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
Debt Clock is free to download; Forgetting Curve Reminder costs $1.99 up front. Debt Clock sells 2 in-app purchases, starting at $1.99 per month. Forgetting Curve Reminder asks for nothing beyond the download.
Debt Clock ships an update every 2 days, Forgetting Curve Reminder every 4 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.
| Parameter | Debt Clock | Forgetting Curve Reminder |
|---|---|---|
| Price | Free — better | $1.99 |
| Positive reviews | — | 88.9% of reviews |
| Update frequency | Every 2 days — better | Every 4 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 3 MB |
| Age rating | 4+ | +4 |
| Developer | Kanta Osumi | Manabi Mate LLC |
In-app purchases
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
Forgetting Curve Reminder
No in-app purchases
Questions
Is Debt Clock free?
Is Forgetting Curve Reminder free?
Do Debt Clock or Forgetting Curve Reminder have ads?
Which is updated more often, Debt Clock or Forgetting Curve Reminder?
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