Comparison

Manabuild vs 一意専心

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

Head to head
About

Manabuild

Features
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Manabuild turns your workbooks and textbooks into daily tasks so you can finish them on schedule. Just enter how much a material covers and when you want to finish it, and Manabuild works out what to study today. - Know what to do today, the moment you open the app • See today's range for each material (for example, Q25–Q33) • Daily amounts are worked out backward from your deadline • Amounts are recalculated as you make progress • Weekday weights, holidays, and pause periods are taken into account • Tap the circle to mark a task done, or log just the amount you finished - Review at the right time, automatically • Ranges you studied come back on Today after set intervals (1, 3, 7, 14, and 30 days by default) • Change the intervals and the number of reviews as you like - Keep each material on pace • Scan a barcode to fill in the title and cover automatically • Set amounts per chapter, the number of rounds, and the unit (questions, pages, words, and more) • See progress, deadline, and study time at a glance • Organize materials by subject - See the road to your goal • Add goals such as exams with their dates, and link materials to them • See the days left and the achievement rate for each goal - Pomodoro timer • A Pomodoro timer with focus, break, and set count, plus a count-up timer • Time remaining also appears on the Lock Screen and in the Dynamic Island • A vibration lets you know when focus and break switch • When you finish, log how far you got and it is added to your study time - Watch your progress build up • Days recorded and your current streak • A grid of the days and hours you studied • Monthly study time and progress by goal and subject - And more • Check and fix past records on the calendar • Home Screen and Lock Screen widgets • Morning and evening reminders (each can be turned off) • Automatic backup to iCloud, so you can restore your data on a new iPhone or after reinstalling • No account needed • Available in Japanese and English, with Dark Mode support - About the Supporter Plan All study features are available without a subscription. Subscribing to the Supporter Plan (an auto-renewing monthly or yearly subscription) removes the ads in the app. • Payment is charged to your Apple Account. • The subscription renews automatically for the same period unless canceled at least 24 hours before the end of the current period. • You can cancel at any time in the iPhone Settings app: your name > Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aidi1206.github.io/manabuild-privacy/

About

一意専心

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スマホを裏返すだけ。それが、あなたの集中のスイッチです。 「一意専心」は、スマートフォンを裏返して机に置くという物理的な動作をきっかけに集中モードを開始する、ストイックな集中タイマーアプリです。 ■ こんな方におすすめ ・勉強や仕事中、つい SNS を開いてしまう ・集中したいのにスマホが気になる ・ポモドーロタイマーだけでは物足りない ・意志の力だけに頼らない仕組みが欲しい ■ 使い方はシンプル 1. 集中したい時間を設定(15分〜最大24時間) 2. 「集中開始」をタップ 3. スマホを裏返して机に置く 4. 3秒後、集中モードがスタート 途中でスマホを持ち上げると…強制アラートが発動! 音・振動・画面点滅・カメラフラッシュの4種類の警告で、あなたの「つい見ちゃった」を撃退します。 ■ 主な機能 ・プリセットタイマー(15分 / 30分 / 60分 / 120分) ・自由なカスタムタイマー設定 ・サイレントモード突破アラーム(マナーモードでも鳴ります) ・3種類のアラーム音(高音ビープ / 低音ブザー / サイレン風) ・振動・画面点滅・カメラフラッシュの個別ON/OFF ・集中失敗時、残り時間からの「タイマー再開」に対応 ・集中完走時(成功時)の通知設定(音・振動・フラッシュ)を個別ON/OFF可能 ・集中モード中はバッテリー節約の黒画面表示 ・設定時間の完走で達成画面を表示 ■ プライバシー 一意専心 はインターネット接続を一切使用しません。 センサーデータはデバイス上でのみ処理され、個人情報の収集・外部送信は行いません。 広告もありません。 スマホを裏返す。その小さな一歩が、深い集中への入り口です。

Screenshots

Manabuild4 screens
一意専心4 screens

Verdict

The call

The clearest difference is ads: 一意専心 at none against Manabuild's shown. On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 31, 2026 and May 30, 2026 respectively.

Scorecard1 real difference · 5 level
Manabuild versus 一意専心: the parameters behind the verdict, then further details
ParameterManabuild一意専心
PriceFreeFree
Update frequencyEvery 5 daysEvery 5 days
AdsYesNo — better
In-app purchasesNoNo
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.6 — better
Further details — not scored
Size8 MB2 MB
Age rating4+4+
DeveloperTADAMUNE ITOHIDEKAZU IIDA

In-app purchases

None

Manabuild

No in-app purchases

None

一意専心

No in-app purchases

Questions

Is Manabuild free?
Manabuild is free to download, with no in-app purchases.
Is 一意専心 free?
一意専心 is free to download, with no in-app purchases.
Do Manabuild or 一意専心 have ads?
Manabuild shows ads; 一意専心 does not.
Which is updated more often, Manabuild or 一意専心?
Manabuild ships an update every 5 days, and 一意専心 every 5 days. Most recently, Manabuild was updated on October 31, 2026 and 一意専心 on May 30, 2026.

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