BA II Plus Calculator vs 1Focus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BA II Plus Calculator
This app replicates the functionality of a physical financial calculator. It offers a comprehensive suite of tools for time-value-of-money calculations, cash-flow analysis, depreciation, and breakeven point computations.
- Time-Value-of-Money (TVM) calculations
- Amortization schedules
- Cash-flow analysis (NPV, IRR)
- Four depreciation methodologies
- Breakeven, profit, and percent difference calculations
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BA II Plus Calculator is a mobile application software based on BA II PLUS calculator. Its use method is consistent with that of physical calculator. FULL RANGE OF FINANCE AND SCIENCE FUNCTIONS • Solves Time-Value-of-Money (TVM) calculations • Generates amortization schedules • Performs cash-flow analysis, and computes NPV and IRR • Calculates depreciation with four different methodologies • Breakeven, profit and percent difference calculations
1Focus
This app helps users improve focus and productivity using the Pomodoro Technique. It tracks focused work sessions, breaks, and even sleep data to provide detailed statistics and feedback. It also offers a feature to help users avoid touching their phones during work periods.
- Pomodoro Technique timer
- Focus session tracking
- Break reminders
- Detailed statistics and trend analysis
- Phone avoidance mode
- Sleep data tracking
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1Focus是一款专注于提高工作和学习效率的番茄钟工具。它帮助用户轻松管理自己的时间，提高专注度，从而更快速地完成任务和项目。 功能亮点 #番茄钟# 番茄工作法是每25分钟，休息5分钟，4个番茄之后进行一个阶段性的长休息。“1Focus”严格遵循《番茄工作法》，权威有效。在任务的每个阶段提醒您，并记录下您的专注数据，随后生成详细的统计图表、趋势分析图、阶段性汇总所有专注数据，及时给出正向反馈。支持您更好去完成后面的工作。运用番茄工作法劳逸结合，张弛有度。高效源于专注！ #不碰手机# 在您需要全身心投入的时候，协助您不碰手机。当开启该功能，APP会记录您不碰手机的时长，并汇总进每日统计。 #睡眠# 每日追踪您的睡眠数据，并汇总进每日统计。 1Focus可以免费下载使用，同时我们提供了高级账户以升级用户体验，您可以在App中了解高级功能。 您可以选择订阅高级会员，以使用更多功能，一旦您确认订阅高级会员，您的iTunes账户将被收取相应的费用，此前通过其他平台兑换的高级会员的未使用部分将不再生效。订阅将自动续费，除非您在当前订阅结束前24小时以上取消自动续订。订阅成功后，您可在iTunes Store中管理订阅。 隐私声明：https://www.kairusi.com/1Focus-privacy.html 会员服务协议：https://www.kairusi.com/1Focus-vip.html 自动续费协议：https://www.kairusi.com/1Focus-autopay.html
Screenshots
Verdict
The clearest difference is review sentiment: BA II Plus Calculator at 55% against 1Focus's 0%. BA II Plus Calculator also leads on rating (3.1 vs 1.0) and in-app purchases (none vs 1). 1Focus's advantage is price (Free vs $1.99). On update cadence, ads, 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
1Focus is free to download; BA II Plus Calculator costs $1.99 up front. 1Focus sells 1 in-app purchase, starting at $1.99 per month. BA II Plus Calculator asks for nothing beyond the download.
BA II Plus Calculator holds the better App Store score, 3.1 against 1.0. That said, the two scores are not equally well evidenced: BA II Plus Calculator has 19 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 55% of BA II Plus Calculator's written reviews are positive against 0% of 1Focus's.
BA II Plus Calculator ships an update every 2 months, 1Focus monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | BA II Plus Calculator | 1Focus |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.1 (19 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 55.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 19 — better | 2 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 4 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | 国栋 焦 | KAIROS Company Limited |
Customer experience
BA II Plus Calculator
1Focus
In-app purchases
BA II Plus Calculator
No in-app purchases
1Focus
- 1Focus月费高级会员$1.991 Month
