# 书非借 vs ReadTrace Pro

书非借 and ReadTrace Pro are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

书非借 ships an update every 2 days, ReadTrace Pro every 3 days. Both last shipped on October 9, 2026.

## The numbers

| Metric | 书非借 | ReadTrace Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/readtrace-pro/id6760514671/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Free |
| Size | 6 MB | 2 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [杭州引力网络技术有限公司](https://appshunter.io/developer/1133518651) | [熵析云枢网络科技](https://appshunter.io/developer/1873311794) |

## What reviewers say

### 书非借

[App page](https://appshunter.io/ios/app/id6741096319)

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

**In-app purchases:** none


### ReadTrace Pro

[App page](https://appshunter.io/ios/app/readtrace-pro/id6760514671)

Save articles from the web for offline reading with a clean, serif-first interface. Organize saved content with custom collections and find anything with intelligent on-device search. Enjoy a private, ad-free reading experience designed for focused consumption.

**Highlights:** Save articles from web, Offline reading, Custom collections, Semantic search, Auto-tagging, iCloud backup, Ad-free experience

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

**In-app purchases:** none


## Frequently asked questions

### Is 书非借 free?

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

### Is ReadTrace Pro free?

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

### Do 书非借 or ReadTrace Pro have ads?

Neither 书非借 nor ReadTrace Pro shows ads.

### Which is updated more often, 书非借 or ReadTrace Pro?

书非借 ships an update every 2 days, and ReadTrace Pro every 3 days. Most recently, 书非借 was updated on October 9, 2026 and ReadTrace Pro on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*