Comparison

Gokaku Log vs Debt Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Gokaku Log

This app helps you track study time for certification exams. It features a Pomodoro-ready timer, automatic progress visualization, and exam countdowns. Designed for busy individuals, it supports various exams and helps you stay motivated towards your goals.

Highlights
  • Study timer with Pomodoro support
  • Automatic study time visualization
  • Exam date countdown
  • Subject and material registration
  • Goal management and progress tracking
  • Offline functionality
Features
Read full description

"Gokaku Log" is a study-record app that supports your daily exam study all the way to passing. A simple, easy-to-keep-up study timer & record tool for busy working adults and students. ■ Recommended for - Aiming for certification exams such as bookkeeping, Real Estate Transaction Specialist (Takken), Administrative Scrivener, Labor & Social Security Attorney (Sharoshi), FP, or TOEIC - Wanting to visualize study time and stay motivated - Wanting to make good use of spare moments — commuting, lunch breaks, before bed - Wanting to solve "I can't focus" and "I can't keep it up" - Wanting to reverse-calculate the days and study hours left until the exam - Wanting to review progress in graphs and see the road to passing ■ Main features [1] Study timer (Pomodoro-ready) - Auto-record study time with one tap - Both stopwatch and countdown modes - Pomodoro Technique: 25 min focus + 5 min break - Keeps recording in the background while the timer runs [2] Automatic study graphs - Visualize study time by day / week / month / year - Stacked graphs by subject (material) - Spot study imbalances at a glance - Calendar view shows your streak [3] Exam-date countdown - Register the dates of exams you plan to take - Check "X days left" on your home screen daily - Manage multiple exams at once (parallel exams supported) - Auto-calculate required daily study hours by reverse calculation from your target [4] Subject & material registration - Freely register materials for each exam - Tag by subject (Civil Law / Accounting / Grammar, etc.) - Total accumulated time per material - Set icons for your reference books [5] Goal management toward passing - Set your exam date and total target hours - Shows your recommended daily study time - Achievement badges reward you for keeping going - Shows your consecutive study days (streak) [6] Saving & reviewing your data - Auto-generate weekly / monthly reports - Feel your growth: "studied X more hours than last month" - Back up & restore your data - iCloud sync for peace of mind when changing devices ■ 5 reasons people choose Gokaku Log 1. Designed specifically for certification exams Built not for university entrance, but for working adults aiming for national exams. Supports every qualification — bookkeeping, Takken, Sharoshi, nursing and civil-service exams, FP, TOEIC, IT, and more. 2. Simple and easy to keep up Just two taps from launch to recording. No complex setup — start today. 3. Designed not to break your focus Notifications off while studying, minimal ads, dark-mode support. Focus first. 4. Exam-date reverse-calculation algorithm Enter the total hours you need to pass, and it auto-calculates the daily hours required. Aim for passing with a plan. 5. Works fully offline Use it on the train or in a café, with no connection. Privacy-safe — data stays on your device. ■ Examples of supported qualifications & exams - Bookkeeping (Nisshō levels 1–3) - Real Estate Transaction Specialist (Takken) - Administrative Scrivener - Labor & Social Security Attorney (Sharoshi) - Financial Planner (FP / AFP / CFP) - TOEIC / TOEFL / Eiken - IT Passport / Fundamental & Applied IT Engineer - National nursing & pharmacist exams - Civil-service exams (national / local / police / fire) - Teacher recruitment, SME Management Consultant, Registered Sales Clerk - Medical & dispensing office work, various certification tests * Plus every other qualification, certification, and national exam ■ About pricing - All core features are free - Premium (optional) removes ads, allows unlimited material registration, and enables data export ■ Support For feedback and requests, please reach us via "Contact" inside the app. We'll keep improving Gokaku Log into an app that supports your success, reflecting your input. With Gokaku Log, turn your daily efforts into "passing." Why not start visualizing your study today? Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Debt Clock

Features
Read full description

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

Gokaku Log4 screens
Debt Clock4 screens

Verdict

The call

The clearest difference is update cadence: Debt Clock at every 2 days against Gokaku Log's every 3 weeks. Debt Clock also leads on iOS requirement (13.0 vs 17.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Gokaku Log sells 1 in-app purchase, starting at $9.99 per year 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.

UpkeepUpdate frequency

Gokaku Log ships an update every 3 weeks, Debt Clock every 2 days. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.

Scorecard2 real differences · 6 level
Gokaku Log versus Debt Clock: the parameters behind the verdict, then further details
ParameterGokaku LogDebt Clock
PriceFreeFree
Positive reviews100.0% of reviews
Update frequencyEvery 3 weeksEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.013.0 — better
Further details — not scored
Size8 MB25 MB
Age rating4+4+
Developerkizuna yoshiharaKanta Osumi

In-app purchases

1 purchases

Gokaku Log

Subscriptions1
  • 広告削除(年払い)$9.991 Year
2 purchases

Debt Clock

Subscriptions2
  • 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

Questions

Is Gokaku Log free?
Gokaku Log is free to download, with in-app purchases available.
Is Debt Clock free?
Debt Clock is free to download, with in-app purchases available.
Do Gokaku Log or Debt Clock have ads?
Both Gokaku Log and Debt Clock show ads.
Which is updated more often, Gokaku Log or Debt Clock?
Gokaku Log ships an update every 3 weeks, and Debt Clock every 2 days. Most recently, Gokaku Log was updated on September 24, 2026 and Debt Clock on September 13, 2026.

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