Comparison

Big Timer vs 勉強タイマー

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

Head to head
About

Big Timer

This utility app provides a large, clear countdown timer with repeat functionality. Customize alarms, themes, and access timers from your lock screen. A Pro version offers an ad-free experience and advanced customization options.

Highlights
  • Repeat countdown
  • Timer history
  • Customizable alarms
  • Light and Dark themes
  • Live Activity integration
  • Ad-free Pro version
Features
Read full description

A simple countdown timer that's big, clear, and easy to use. KEY FEATURES • Repeat: Restart the same timer when the countdown ends • History: Quickly restart one of your recently used timers • Alarms: Set the alarm sound, volume, and duration • Themes: Choose between Light and Dark • Live Activity: Check the time remaining and pause, resume, or stop the timer from the Lock Screen or Dynamic Island. The free version includes banner ads. Watch a video ad to hide them for 15 minutes. PRO FEATURES Unlock Pro with a one-time purchase to get: • An ad-free experience • Custom themes: Choose your text color, background color, and font • More alarm options: Get additional alarm sounds and choose a timer completion sound from your device's music library Pro is a one-time purchase, not a subscription. Note: Completion sounds selected from your music library play only while the app is visible on screen. When the app is in the background, the completion notification uses the notification sound instead.

About

勉強タイマー

A visual countdown timer that helps you manage study, work, and break times. Color bars decrease to show remaining time at a glance, with customizable skins and sound options. Works offline and requires no account.

Highlights
  • Visual countdown timer with color bars
  • Adjustable time settings up to 199 minutes
  • Large horizontal display for easy viewing
  • Customizable aluminum-style skins
  • Adjustable notification sounds and haptic feedback
  • Offline functionality
Read full description

あと何分、集中する? 残り時間を、色でつかもう。 「勉強タイマー」は、勉強・仕事・休憩の時間を区切る、見えるカウントダウンタイマーです。20本のカラーバーが少しずつ減っていくので、数字を読み続けなくても、残り時間の量をひと目で確認できます。 ■ こんな場面に ・25分だけ勉強や読書に集中したいとき ・宿題や試験勉強を、決めた時間で進めたいとき ・仕事や会議を、時間を決めて切り上げたいとき ・休憩やストレッチの終わりを確認したいとき ■ 机に置いて、横向きの大きな表示で 計測を始めると横向き表示になり、カラーバー・残り時間・残量パーセントを大きく表示。オレンジ、ライム、グリーン、ブルーのバーで、時間の減り方を視覚的に捉えられます。 ■ 時間を選んで、すぐ開始 10秒単位で最大199分50秒まで設定できます。右側のダイヤルから一時停止・再開・終了を操作でき、操作後はボタンが収納されます。 ■ 場所に合わせたお知らせ 通知音は小・大・消音の3段階。残り半分の合図、触覚フィードバック、任意のバックグラウンド通知に対応しています。バックグラウンド通知には、iPhoneの通知許可が必要です。 ■ 好みの見た目で 4色のアルミニウム風スキンから、タイマーの仕上げを選べます。 広告、アプリ内課金、サブスクリプション、アカウント登録はありません。タイマーはオフラインで使えます。アクセス解析や個人データの収集も行いません。

Screenshots

Big Timer4 screens
勉強タイマー4 screens

Verdict

The call

The clearest difference is price: Big Timer at Free against 勉強タイマー's $0.99. Big Timer also leads on update cadence (every 9 days vs every 4 weeks). 勉強タイマー's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement 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

Big Timer is free to download; 勉強タイマー costs $0.99 up front. Big Timer sells 1 one-off in-app purchase. 勉強タイマー asks for nothing beyond the download.

UpkeepUpdate frequency

Big Timer ships an update every 9 days, 勉強タイマー every 4 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Big Timer versus 勉強タイマー: the parameters behind the verdict, then further details
ParameterBig Timer勉強タイマー
PriceFree — better$0.99
Rating1.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 9 days — betterEvery 4 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad — betteriPhone
Requires iOS18.617.0 — better
Further details — not scored
Size16 MB6 MB
Age rating4+4+
DeveloperTsukutenaSMART BIT K.K

Customer experience

Big Timer

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

勉強タイマー

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Big Timer

One-time1
  • Pro Upgrade$1.99
None

勉強タイマー

No in-app purchases

Questions

Is Big Timer free?
Big Timer is free to download, with in-app purchases available.
Is 勉強タイマー free?
勉強タイマー costs $0.99, with no in-app purchases.
Do Big Timer or 勉強タイマー have ads?
Big Timer shows ads; 勉強タイマー does not.
Which is updated more often, Big Timer or 勉強タイマー?
Big Timer ships an update every 9 days, and 勉強タイマー every 4 weeks. Most recently, Big Timer was updated on November 5, 2026 and 勉強タイマー on November 6, 2026.

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