# 虎虎吃短信 vs Bio

The clearest difference is monetization model: 虎虎吃短信 at free against Bio's free with in-app purchases. 虎虎吃短信 also leads on iOS requirement (14.0 vs 17.0). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. 虎虎吃短信 sells 3 in-app purchases, starting at $0.99 per month and Bio sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for 虎虎吃短信 against 5.0 for Bio. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 虎虎吃短信 | Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/id6480389051/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/bio-calculator/id6498629520/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 42 MB | 51 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Shanghai Hotspot Technology Co., Ltd.](https://appshunter.io/developer/1784384773) | [杰 吴](https://appshunter.io/developer/1729187814) |

## What reviewers say

### 虎虎吃短信

[App page](https://appshunter.io/ios/app/id6480389051)

This app uses on-device machine learning to filter spam messages without needing internet access. It intelligently identifies unwanted texts based on semantic analysis, requiring no manual rule configuration. Users can contribute to its intelligence by reporting new message samples.

**Highlights:** On-device offline filtering, Machine learning semantic analysis, No manual rule configuration, User-contributed message samples, Privacy-focused, no network permission

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 年度会员 | $3.99 | per year |
| 终身会员 | $4.99 | one-time |


### Bio

[App page](https://appshunter.io/ios/app/bio-calculator/id6498629520)

This app provides essential life science calculations for researchers and students. It simplifies complex tasks like solution preparation, cell counting, and molecular conversions, offering detailed calculation steps for lab notes and reports.

**Highlights:** Solution preparation calculations, Nucleic acid and protein conversions, Manual cell counting with labels, Cell density and seeding calculations, Molecular weight and GC content, Lab solution recipes and notes

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $2.99 | per month |
| Yearly Plan | $19.99 | per year |
| Lifetime member | $44.99 | one-time |


## Frequently asked questions

### Is 虎虎吃短信 free?

虎虎吃短信 is free to download, with in-app purchases available.

### Is Bio free?

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

### Which has better reviews, 虎虎吃短信 or Bio?

虎虎吃短信 and Bio are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do 虎虎吃短信 or Bio have ads?

Neither 虎虎吃短信 nor Bio shows ads.

### Which is updated more often, 虎虎吃短信 or Bio?

虎虎吃短信 ships an update every 3 weeks, and Bio every 3 weeks. Most recently, 虎虎吃短信 was updated on October 30, 2026 and Bio on November 8, 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.*