# 书影 vs PageGrain

The clearest difference is update cadence: 书影 at every 4 days against PageGrain's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 书影 sells 1 one-off in-app purchase and PageGrain sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

书影 ships an update every 4 days, PageGrain every 9 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 书影 | PageGrain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/id6761486912/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | Free with in-app purchases | — |
| Size | 134 MB | 135 MB |
| Requires iOS | **17** | 18.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [展波 陈](https://appshunter.io/developer/1889714529) | [Du Wenyu](https://appshunter.io/developer/1896486913) |

## What reviewers say

### 书影

[App page](https://appshunter.io/ios/app/id6761486912)

Consolidate highlights and notes from various reading platforms into a personal library. Rediscover past reading with daily reviews, random browsing, and thematic organization.

**Highlights:** Import highlights from multiple reading apps, Daily review of new notes, Random browsing of old notes, Categorize books and notes, Thematic roaming for cross-book connections, Desktop widgets for content reminders, Local storage for privacy and independence

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 终身买断 | $9.99 | one-time |


### PageGrain

[App page](https://appshunter.io/ios/app/pagegrain/id6767551392)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $1.99 | per month |
| 年会员 | $19.99 | per year |
| 终身会员 | $29.99 | one-time |


## Frequently asked questions

### Is 书影 free?

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

### Is PageGrain free?

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

### Do 书影 or PageGrain have ads?

Neither 书影 nor PageGrain shows ads.

### Which is updated more often, 书影 or PageGrain?

书影 ships an update every 4 days, and PageGrain every 9 days. Most recently, 书影 was updated on October 28, 2026 and PageGrain on October 25, 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.*