# Sifter vs 壳图图

The clearest difference is price: 壳图图 at Free against Sifter's $2.99. 壳图图 also leads on update cadence (every 8 days vs every 3 months) and iOS requirement (15.0 vs 17.0). Sifter's advantage is rating (4.1 vs 3.5) and in-app purchases (none vs 1). On ads and device support there is nothing between them.

壳图图 is free to download; Sifter costs $2.99 up front. 壳图图 sells 1 one-off in-app purchase. Sifter asks for nothing beyond the download.

Sifter holds the better App Store score, 4.1 against 3.5. That said, the two scores are not equally well evidenced: Sifter has 116 ratings behind it against 2, so its average is the more settled of the two.

Sifter ships an update every 3 months, 壳图图 every 8 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sifter | 壳图图 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.1 (116 ratings)](https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/id6761163201/reviews) |
| Number of ratings | **116** | 2 |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 10 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [磊 汪](https://appshunter.io/developer/1063627762) | [日伟 何](https://appshunter.io/developer/1633195120) |

## What reviewers say

### Sifter

[App page](https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258)

This app provides a smart spam filter for iOS devices, allowing users to create personalized rules to block unwanted text messages. It prioritizes user privacy with local processing and offers advanced filtering options like regular expressions.

**Highlights:** Customizable filtering rules, Blacklist and whitelist contacts, Regex filtering for advanced control, Local data processing for privacy, Blocks unwanted SMS and MMS

**In-app purchases:** none


### 壳图图

[App page](https://appshunter.io/ios/app/id6761163201)

Create stylish screenshots with a minimalist design. This utility app offers a new experience for capturing high-definition images, syncing in real-time with official Apple phone models.

**Highlights:** Minimalist design, One-click HD image saving, Real-time sync with Apple models, New screenshot experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久会员 | Free | one-time |


## Frequently asked questions

### Is Sifter free?

Sifter costs $2.99, with no in-app purchases.

### Is 壳图图 free?

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

### Which has better reviews, Sifter or 壳图图?

Sifter is rated higher. Sifter averages 4.1 out of 5 from 116 ratings, while 壳图图 averages 3.5 from 2 ratings.

### Do Sifter or 壳图图 have ads?

Neither Sifter nor 壳图图 shows ads.

### Which is updated more often, Sifter or 壳图图?

Sifter ships an update every 3 months, and 壳图图 every 8 days. Most recently, Sifter was updated on November 6, 2026 and 壳图图 on November 5, 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.*