# Formula Calculator Alpha vs 拿捏单词

The clearest difference is in-app purchases: Formula Calculator Alpha at none against 拿捏单词's 3. 拿捏单词's advantage is update cadence (daily vs every 9 days) and iOS requirement (18.6 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. 拿捏单词 sells 3 in-app purchases, starting at $2.99 per month. Formula Calculator Alpha asks for nothing beyond the download.

Formula Calculator Alpha ships an update every 9 days, 拿捏单词 daily. The most recent releases landed on September 25, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Formula Calculator Alpha | 拿捏单词 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 71 MB |
| Requires iOS | 26.2 | **18.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [子宸 魏](https://appshunter.io/developer/1890054508) | [Xi'an Mengdong Network Technology Co., Ltd.](https://appshunter.io/developer/1687598458) |

## What reviewers say

### Formula Calculator Alpha

[App page](https://appshunter.io/ios/app/formula-calculator-alpha/id6775855674)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 拿捏单词

[App page](https://appshunter.io/ios/app/3/id6779029779)

Learn English vocabulary efficiently using your Apple Watch and iPhone. This app integrates seamlessly into your daily routine, allowing you to review words during short breaks. Track your progress and build a strong vocabulary for exams or personal growth.

**Highlights:** Offline learning on Apple Watch and iPhone, Spaced repetition based on user input, Automatic collection of weak words, Progress tracking and daily reminders, Syncs across devices via iCloud, Includes over 20 vocabulary sets

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月Pro版会员 | $2.99 | per month |
| 连续包年Pro版会员 | $9.99 | per year |
| Pro版永久会员 | $9.99 | one-time |


## Frequently asked questions

### Is Formula Calculator Alpha free?

Formula Calculator Alpha is free to download, with no in-app purchases.

### Is 拿捏单词 free?

拿捏单词 is free to download, with in-app purchases available.

### Do Formula Calculator Alpha or 拿捏单词 have ads?

Neither Formula Calculator Alpha nor 拿捏单词 shows ads.

### Which is updated more often, Formula Calculator Alpha or 拿捏单词?

Formula Calculator Alpha ships an update every 9 days, and 拿捏单词 daily. Most recently, Formula Calculator Alpha was updated on September 25, 2026 and 拿捏单词 on September 30, 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.*