# Worm. vs Send to X4

The clearest difference is update cadence: Send to X4 at daily against Worm.'s every 3 days. Worm.'s advantage is ratings volume (31 vs 4). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Worm. against 5.0 for Send to X4. That said, the two scores are not equally well evidenced: Worm. has 31 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Worm. ships an update every 3 days, Send to X4 daily. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Worm. | Send to X4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (31 ratings)](https://appshunter.io/ios/app/worm/id6743779486/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/send-to-x4/id6758729873/reviews) |
| Number of ratings | **31** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Free | Free |
| Size | 32 MB | 34 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [David Burton](https://appshunter.io/developer/1804509855) | [Jaime Chapinal](https://appshunter.io/developer/1855881822) |

## What reviewers say

### Worm.

[App page](https://appshunter.io/ios/app/worm/id6743779486)

This app helps book lovers track their reading, discover new titles, and connect with a community of fellow readers. Organize your digital bookshelf, set reading goals, and engage in discussions about your favorite books.

**Highlights:** Digital bookshelf management, Personalized reading goals, Friend activity feed, Book discovery and recommendations, User profiles and statistics, Book reviews and discussions

**Features:** macOS Compatibility

**In-app purchases:** none


### Send to X4

[App page](https://appshunter.io/ios/app/send-to-x4/id6758729873)

Wirelessly send articles, notes, and custom screensavers to your e-ink reader. Convert web content to EPUBs, import your own files, and manage content directly on the device. Enjoy a private, cloud-free experience over local WiFi.

**Highlights:** Convert articles to EPUB, Import custom EPUB files, Send text notes, Design custom screensavers, Browse e-ink wallpapers, Manage device files

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

**In-app purchases:** none


## Frequently asked questions

### Is Worm. free?

Worm. is free to download, with no in-app purchases.

### Is Send to X4 free?

Send to X4 is free to download, with no in-app purchases.

### Which has better reviews, Worm. or Send to X4?

Worm. and Send to X4 are both rated 5.0 out of 5 on the App Store, from 31 and 4 ratings respectively.

### Do Worm. or Send to X4 have ads?

Neither Worm. nor Send to X4 shows ads.

### Which is updated more often, Worm. or Send to X4?

Worm. ships an update every 3 days, and Send to X4 daily. Most recently, Worm. was updated on October 10, 2026 and Send to X4 on October 3, 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.*