# Sifter vs Read Copilot

The clearest difference is review sentiment: Read Copilot at 100% against Sifter's 29%. Read Copilot also leads on price (Free vs $2.99) and rating (5.0 vs 4.1). Sifter's advantage is in-app purchases (none vs 2) and ratings volume (108 vs 3). On ads, device support and iOS requirement there is nothing between them.

Read Copilot is free to download; Sifter costs $2.99 up front. Read Copilot sells 2 in-app purchases, starting at $2.99 per month. Sifter asks for nothing beyond the download.

Read Copilot holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Sifter has 108 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 29% of Sifter's written reviews are positive against 100% of Read Copilot's.

Sifter ships an update every 3 months, Read Copilot weekly. The most recent releases landed on September 17, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Sifter | Read Copilot |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.1 (108 ratings)](https://appshunter.io/ios/app/sifter-spam-sms-filter/id1265348258/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/read-copilot-ai-book-reader/id6449242676/reviews)** |
| Number of ratings | **108** | 3 |
| Positive reviews | 28.6% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#172** | — |
| Size | 10 MB | 92 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [磊 汪](https://appshunter.io/developer/1063627762) | [晓飞 徐](https://appshunter.io/developer/1688306191) |

## What reviewers say

### Sifter

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

**Currently charting:** #172 Top Paid · Utilities (US App Store)

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

**Features:** Vision Pro support

**In-app purchases:** none


### Read Copilot

[App page](https://appshunter.io/ios/app/read-copilot-ai-book-reader/id6449242676)

This AI-powered app enhances your reading experience by summarizing articles from your subscribed RSS feeds. It helps you stay informed by condensing content, translating text, and offering insights, allowing you to consume information more efficiently.

**Highlights:** AI-powered article summarization, RSS feed subscription management, Article translation, Customizable font size and style, Save articles for later, Content discussion enablement

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is Sifter free?

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

### Is Read Copilot free?

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

### Which has better reviews, Sifter or Read Copilot?

Read Copilot is rated higher. Sifter averages 4.1 out of 5 from 108 ratings, while Read Copilot averages 5.0 from 3 ratings.

### Do Sifter or Read Copilot have ads?

Neither Sifter nor Read Copilot shows ads.

### Which is updated more often, Sifter or Read Copilot?

Sifter ships an update every 3 months, and Read Copilot weekly. Most recently, Sifter was updated on September 17, 2026 and Read Copilot on August 31, 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.*