# Shutter vs 短信拦截

The clearest difference is update cadence: Shutter at daily against 短信拦截's monthly. Shutter also leads on device support (4 vs 2) and price ($0.99 vs $1.99). 短信拦截's advantage is rating (5.0 vs 4.8). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.

Shutter costs $0.99 and 短信拦截 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

短信拦截 holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews complicate that: 50% of Shutter's written reviews are positive against 44% of 短信拦截's, so the app with the better star average is not the one people write more warmly about.

Shutter ships an update daily, 短信拦截 monthly. The most recent releases landed on October 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Shutter | 短信拦截 |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | [4.8 (5 ratings)](https://appshunter.io/ios/app/shutter-speed-angle/id1553718420/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id1639460076/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | **50.0% of reviews** | 43.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Monetization | Paid | Paid |
| Size | 0 MB | 1 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anna Koynova](https://appshunter.io/developer/1441894484) | [WenJie Studio](https://appshunter.io/developer/1639454309) |

## What reviewers say

### Shutter

[App page](https://appshunter.io/ios/app/shutter-speed-angle/id1553718420)

This utility app converts shutter speed to shutter angle and vice versa. It helps match exposure lengths between different cameras and frame rates, ensuring consistent visual results.

**Highlights:** Shutter speed to shutter angle conversion, Shutter angle to shutter speed conversion, Match exposure between cameras, Supports different frame rates, Simple and intuitive interface

**In-app purchases:** none


### 短信拦截

[App page](https://appshunter.io/ios/app/id1639460076)

This AI-powered tool offers offline SMS filtering to block spam, scams, and unwanted messages. It uses machine learning and customizable rules to keep your inbox clean without uploading any data.

**Highlights:** Offline AI SMS filtering, Blocks spam, scams, and unwanted messages, Customizable whitelist and blacklist, Machine learning for intelligent content blocking, No internet access or data upload, Uses iOS Information Filtering Extension

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Shutter free?

Shutter costs $0.99, with no in-app purchases.

### Is 短信拦截 free?

短信拦截 costs $1.99, with no in-app purchases.

### Which has better reviews, Shutter or 短信拦截?

短信拦截 is rated higher. Shutter averages 4.8 out of 5 from 5 ratings, while 短信拦截 averages 5.0 from 4 ratings.

### Do Shutter or 短信拦截 have ads?

Neither Shutter nor 短信拦截 shows ads.

### Which is updated more often, Shutter or 短信拦截?

Shutter ships an update daily, and 短信拦截 monthly. Most recently, Shutter was updated on October 10, 2026 and 短信拦截 on September 21, 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.*