# 手机知网 vs ISBN

The clearest difference is price: 手机知网 at Free against ISBN's $0.99. 手机知网 also leads on update cadence (every 2 weeks vs every 8 months). ISBN's advantage is in-app purchases (none vs 1) and review sentiment (67% vs 54%). On ads, device support and iOS requirement there is nothing between them.

手机知网 is free to download; ISBN costs $0.99 up front. 手机知网 sells 1 one-off in-app purchase. ISBN asks for nothing beyond the download.

手机知网 ships an update every 2 weeks, ISBN every 8 months. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 手机知网 | ISBN |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[2.8 (12 ratings)](https://appshunter.io/ios/app/id598116103/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 54.3% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 8 months |
| Monetization | — | Paid |
| Size | 225 MB | 3 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tongfang Knowledge Network (Beijing) Technology Co., Ltd.](https://appshunter.io/developer/963639311) | [CROMBEZ Emmanuel](https://appshunter.io/developer/375656695) |

## What reviewers say

### 手机知网

[App page](https://appshunter.io/ios/app/id598116103)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 期刊季卡 | $24.99 | one-time |


### ISBN

[App page](https://appshunter.io/ios/app/isbn/id1061626540)

Create and manage a personal book inventory using ISBN codes. Organize books with custom flags, notes, and contact associations. Export your library data to CSV for use in spreadsheets.

**Highlights:** Book inventory management, ISBN scanning/entry, Customizable flags for categorization, Free text notes per book, Attach books to contacts, CSV export for spreadsheets

**In-app purchases:** none


## Frequently asked questions

### Is 手机知网 free?

手机知网 is free to download, with in-app purchases available.

### Is ISBN free?

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

### Do 手机知网 or ISBN have ads?

Neither 手机知网 nor ISBN shows ads.

### Which is updated more often, 手机知网 or ISBN?

手机知网 ships an update every 2 weeks, and ISBN every 8 months. Most recently, 手机知网 was updated on November 1, 2026 and ISBN on October 24, 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.*