# BA II Plus Calculator vs 1Focus

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.

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.

## The numbers

| Metric | BA II Plus Calculator | 1Focus |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.1 (19 ratings)](https://appshunter.io/ios/app/ba-ii-plus-calculator/id1466088186/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/1focus/id1575161059/reviews) |
| Number of ratings | **19** | 2 |
| Positive reviews | **55.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Paid | **Freemium** |
| Size | 4 MB | 130 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [国栋 焦](https://appshunter.io/developer/1466088185) | [KAIROS Company Limited](https://appshunter.io/developer/1495144014) |

## What reviewers say

### BA II Plus Calculator

[App page](https://appshunter.io/ios/app/ba-ii-plus-calculator/id1466088186)

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.

**Highlights:** Time-Value-of-Money (TVM) calculations, Amortization schedules, Cash-flow analysis (NPV, IRR), Four depreciation methodologies, Breakeven, profit, and percent difference calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### 1Focus

[App page](https://appshunter.io/ios/app/1focus/id1575161059)

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.

**Highlights:** Pomodoro Technique timer, Focus session tracking, Break reminders, Detailed statistics and trend analysis, Phone avoidance mode, Sleep data tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1Focus月费高级会员 | $1.99 | per month |


## Frequently asked questions

### Is BA II Plus Calculator free?

BA II Plus Calculator costs $1.99, with no in-app purchases.

### Is 1Focus free?

1Focus is free to download, with in-app purchases available.

### Which has better reviews, BA II Plus Calculator or 1Focus?

BA II Plus Calculator is rated higher. BA II Plus Calculator averages 3.1 out of 5 from 19 ratings, while 1Focus averages 1.0 from 2 ratings.

### Do BA II Plus Calculator or 1Focus have ads?

Neither BA II Plus Calculator nor 1Focus shows ads.

### Which is updated more often, BA II Plus Calculator or 1Focus?

BA II Plus Calculator ships an update every 2 months, and 1Focus monthly. Most recently, BA II Plus Calculator was updated on October 29, 2026 and 1Focus on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*