# Piiico · Image Annotation vs 虎虎吃短信

The clearest difference is rating: 虎虎吃短信 at 5.0 against Piiico · Image Annotation's 4.5. 虎虎吃短信 also leads on monetization model (free vs free with in-app purchases) and review sentiment (100% vs 84%). Piiico · Image Annotation's advantage is ratings volume (120 vs 2) and iOS requirement (11.0 vs 14.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Piiico · Image Annotation sells 8 one-off in-app purchases and 虎虎吃短信 sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

虎虎吃短信 holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Piiico · Image Annotation has 120 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 84% of Piiico · Image Annotation's written reviews are positive against 100% of 虎虎吃短信's.

Piiico · Image Annotation ships an update monthly, 虎虎吃短信 every 3 weeks. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Piiico · Image Annotation | 虎虎吃短信 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (120 ratings)](https://appshunter.io/ios/app/piiico-image-annotation/id1395700699/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6480389051/reviews)** |
| Number of ratings | **120** | 2 |
| Positive reviews | 84.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 31 MB | 42 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Hangzhou Onedium Technology Co., Ltd.](https://appshunter.io/developer/1395700698) | [Shanghai Hotspot Technology Co., Ltd.](https://appshunter.io/developer/1784384773) |

## What reviewers say

### Piiico · Image Annotation

[App page](https://appshunter.io/ios/app/piiico-image-annotation/id1395700699)

Easily mark up and share your images to communicate ideas more clearly. Offers a wide range of annotation tools with customizable styles, including smart text highlighting and fun face covering options. Export and share your annotated images conveniently.

**Highlights:** Rich annotation tool library, Diverse markup styles, Instant face detection and cover, Smart text highlighting, Sticker tool for emojis and originals, Convenient export and sharing

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Free upgrade | Free | one-time |
| Face Cover | $0.99 | one-time |
| Text Highlight | $0.99 | one-time |
| Colors & Styles | $0.99 | one-time |
| Magnifier | $0.99 | one-time |
| Sticker Tool | $0.99 | one-time |
| Focus Tool | $0.99 | one-time |
| Piiico Pro | $2.99 | one-time |


### 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 |


## Frequently asked questions

### Is Piiico · Image Annotation free?

Piiico · Image Annotation is free to download, with in-app purchases available.

### Is 虎虎吃短信 free?

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

### Which has better reviews, Piiico · Image Annotation or 虎虎吃短信?

虎虎吃短信 is rated higher. Piiico · Image Annotation averages 4.5 out of 5 from 120 ratings, while 虎虎吃短信 averages 5.0 from 2 ratings.

### Do Piiico · Image Annotation or 虎虎吃短信 have ads?

Neither Piiico · Image Annotation nor 虎虎吃短信 shows ads.

### Which is updated more often, Piiico · Image Annotation or 虎虎吃短信?

Piiico · Image Annotation ships an update monthly, and 虎虎吃短信 every 3 weeks. Most recently, Piiico · Image Annotation was updated on October 23, 2026 and 虎虎吃短信 on October 6, 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.*