# ReadOn. vs S1Fun

The clearest difference is rating: S1Fun at 5.0 against ReadOn.'s 4.7. S1Fun also leads on iOS requirement (12.0 vs 17.0). ReadOn.'s advantage is ratings volume (13 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. ReadOn. sells 4 in-app purchases, starting at $0.99 per 7 days and S1Fun sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

S1Fun holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: ReadOn. has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

ReadOn. ships an update every 2 months, S1Fun monthly. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ReadOn. | S1Fun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13 ratings)](https://appshunter.io/ios/app/readon/id1212717344/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/s1fun/id1531897069/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 11 MB | 31 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [健翔 徐](https://appshunter.io/developer/1212717343) | [程 徐](https://appshunter.io/developer/1531890669) |

## What reviewers say

### ReadOn.

[App page](https://appshunter.io/ios/app/readon/id1212717344)

Discover and organize content from your favorite sources with this RSS reader. Enjoy distraction-free reading, bookmark articles, and share discoveries. Available on iPhone, iPad, and Mac.

**Highlights:** Content discovery, Personalized news feed, Distraction-free reading, Bookmark articles, Share discoveries, Intuitive interface

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $0.99 | per 7 days |
| Monthly Plan | $1.99 | per month |
| Annual Pro | $19.99 | per year |
| Upgrade | $1.99 | one-time |


### S1Fun

[App page](https://appshunter.io/ios/app/s1fun/id1531897069)

This app provides a third-party client for the S1 forum, allowing users to customize their browsing experience. It offers intuitive gesture controls for navigating forums, managing favorite boards, and interacting with posts. Enjoy a streamlined way to access and engage with S1 forum content.

**Highlights:** Customize forum browsing, Add/remove favorite forums, Reorder favorite forums, Gesture controls for navigation, Refresh forum data with a tap, Quickly return to top of page

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一瓶快乐水 | $0.99 | one-time |
| 一杯黑咖啡 | $0.99 | one-time |
| 两杯黑咖啡 | $1.99 | one-time |
| 一顿汉堡王 | $3.99 | one-time |


## Frequently asked questions

### Is ReadOn. free?

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

### Is S1Fun free?

S1Fun is free to download, with in-app purchases available.

### Which has better reviews, ReadOn. or S1Fun?

S1Fun is rated higher. ReadOn. averages 4.7 out of 5 from 13 ratings, while S1Fun averages 5.0 from 1 ratings.

### Do ReadOn. or S1Fun have ads?

Neither ReadOn. nor S1Fun shows ads.

### Which is updated more often, ReadOn. or S1Fun?

ReadOn. ships an update every 2 months, and S1Fun monthly. Most recently, ReadOn. was updated on October 13, 2026 and S1Fun on October 4, 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.*