Comparison

Debt Clock vs Yomibi

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

Head to head
About

Debt Clock

Features
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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

About

Yomibi

Features
Read full description

Yomibi is a speed-reading app that multiplies your reading speed with the RSVP (Rapid Serial Visual Presentation) technique. Words appear on screen one at a time; the red focus letter always stays in the same spot. Because your eyes never jump along the line, nothing breaks your focus. Free to download, with a full-featured 7-day trial. After that, a single one-time purchase unlocks the app forever — no subscription, ever. FEATURES • Import PDF, Word (.docx), EPUB, web pages, and clipboard text • Adjustable speed from 100 to 1,000 words per minute • Natural rhythm with end-of-sentence and comma pauses • Automatically pick up where you left off — progress is never lost • Library: folders, search, multi-select, reading time estimates • Personal reading view: colors, font, and text size • Optional haptic feedback at sentence ends • The screen stays awake while you read; the interface fades away, leaving only the word FULLY OFFLINE No accounts, no ads, no tracking. Your texts stay on your device alone.

Screenshots

Debt Clock4 screens
Yomibi4 screens

Verdict

The call

The clearest difference is ads: Yomibi at none against Debt Clock's shown. Debt Clock's advantage is update cadence (every 2 days vs every 5 days) and iOS requirement (13.0 vs 15.0). On price, 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. Debt Clock sells 2 in-app purchases, starting at $1.99 per month and Yomibi sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Debt Clock ships an update every 2 days, Yomibi every 5 days. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 3 level
Debt Clock versus Yomibi: the parameters behind the verdict, then further details
ParameterDebt ClockYomibi
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 5 days
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size25 MB5 MB
Age rating4+4+
DeveloperKanta OsumiMURAT KARABUL

In-app purchases

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
1 purchases

Yomibi

One-time1
  • Sakkad Full Version$3.99

Questions

Is Debt Clock free?
Debt Clock is free to download, with in-app purchases available.
Is Yomibi free?
Yomibi is free to download, with in-app purchases available.
Do Debt Clock or Yomibi have ads?
Debt Clock shows ads; Yomibi does not.
Which is updated more often, Debt Clock or Yomibi?
Debt Clock ships an update every 2 days, and Yomibi every 5 days. Most recently, Debt Clock was updated on October 18, 2026 and Yomibi on October 3, 2026.

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