15min Change Timer vs Calculator H
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
15min Change Timer
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「15分チェンジ法」に基づく集中力コントロールタイマー。 好きなこと（Free）とやるべきこと（Work）を15分ずつ交互に繰り返すことで、作業への心理的障壁を下げ、自然な集中状態（フロー）へ導きます。 ▼ 特徴 ・Work → 15分の集中タイム。ノッてきたらそのまま延長OK（フロー状態の証） ・Free → 自由な休憩タイム。超過すると即アラートで Work 復帰を催促 ・ロック画面 & Dynamic Island にタイマーを常時表示 ・Apple Watch の通知からワンタップでモード切替 ・月間の作業時間をカレンダーで振り返り ▼ こんな人におすすめ ・作業を始めるのが億劫な人 ・集中が続かない人 ・ポモドーロ法が合わなかった人 15分だけ、まずは始めてみませんか？
Calculator H
This app offers a robust calculator with history and editable equations. It includes specialized calculators for mortgage calculations, interest rates, and currency conversions with real-time updates.
- Editable calculation history
- Mortgage calculator (fixed, LPR, provident fund)
- Interest rate comparison
- Currency converter with real-time rates
- Save and compare mortgage data
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Calculator H is a fast and practical calculator that brings together everyday calculations and useful financial tools in one app. Calculator: • History: View your calculation history right after each calculation. • Editable formulas: If you make a mistake in a long expression, there is no need to start over. Simply tap the incorrect part to edit it. • Recalculation: Tap any history record to recalculate quickly without entering everything again. Mortgage Calculator: • Mortgage calculation: Supports fixed rates, LPR, and housing fund options, with clear results for monthly payments, total interest, and repayment details. • Interest comparison: Enter different interest rates to compare monthly payments, total interest, and other key figures. • Mortgage comparison: Save your current mortgage details and compare multiple options to find the most cost-effective solution. Currency Calculator: • A comprehensive and easy-to-use currency calculator. • Exchange rates are updated daily in real time for more accurate and reliable calculations. 【VIP 会员】 • 付款： 用户确认购买并付款后记入iTunes账号。 • 取消续订： 如需取消续订，请在当前订阅到期24小时以前，手动在iTunes/Apple ID 设置管理中关闭自动续订功能。 • 续订： 苹果iTunes账户会在到期前24小时内扣款，扣款成功后订阅周期顺延相应期限。 • 会员协议：https://www.kdocs.cn/l/cjDtS2UiKEhZ • 服务条款：https://www.kdocs.cn/l/ckMura8xZyhr
Screenshots
Verdict
The clearest difference is in-app purchases: 15min Change Timer at none against Calculator H's 5. Calculator H's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price and ads 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
Both are free to download. Calculator H sells 3 in-app purchases, starting at $2.99 per year. 15min Change Timer asks for nothing beyond the download.
| Parameter | 15min Change Timer | Calculator H |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (28 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 28 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 1 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroki Muranaka | Chengdu Cold Technology Co., Ltd |
In-app purchases
15min Change Timer
No in-app purchases
Calculator H
- 一年会员$2.991 Year
- 打赏3 variants$0.99
- 打赏$1.99
Questions
Is 15min Change Timer free?
Is Calculator H free?
Do 15min Change Timer or Calculator H have ads?
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