BNStopwatch 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.
BNStopwatch
This digital stopwatch features a large, clear display with oversized numbers for easy readability from afar. It supports lap time recording, color customization, and is available across multiple Apple devices, making it ideal for various timing needs.
- Large, clear display
- Lap time recording
- Color customization
- Multi-device support (iPhone, iPad, Apple Watch)
- Ideal for group activities and sports
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A digital stopwatch with big, bold numbers. Simple and easy to use. ■ Large, Clear Display The oversized numbers fill the screen, making them easy to read even from a distance. Perfect for group activities, parties, games, and sports timing. ■ Lap Time Recording Record and view lap times in a list. Great for sports training and performance tracking. ■ Color Customization Change the background and text colors to suit your style. ■ Multi-Device Support Available on iPhone, iPad, and Apple Watch. Use the iPad's large screen for meetings and events. Check your time at a glance with Apple Watch. ■ Perfect For ・Lightning talk (LT) time management ・Party and board game timers ・Sports timing and training ・Cooking and experiment timing ・Meeting and presentation time tracking
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.
- 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
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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
Verdict
The clearest difference is price: BNStopwatch at Free against 勉強タイマー's $0.99. BNStopwatch also leads on update cadence (every 4 days vs every 4 weeks) and device support (4 vs 1). 勉強タイマー's advantage is review sentiment (100% vs 57%) and in-app purchases (none vs 1). On 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
BNStopwatch is free to download; 勉強タイマー costs $0.99 up front. BNStopwatch sells 1 one-off in-app purchase. 勉強タイマー asks for nothing beyond the download.
BNStopwatch ships an update every 4 days, 勉強タイマー every 4 weeks. Both last shipped on October 29, 2026.
| Parameter | BNStopwatch | 勉強タイマー |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.4 (33 ratings) — better | — |
| Positive reviews | 57.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 33 — better | — |
| Update frequency | Every 4 days — better | Every 4 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, Apple TV, Apple Watch — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | MOLABO | SMART BIT K.K |
Customer experience
BNStopwatch
勉強タイマー
In-app purchases
BNStopwatch
- Upgrade$0.99
勉強タイマー
No in-app purchases









