# Dot Book vs PageGrain

The clearest difference is in-app purchases: Dot Book at none against PageGrain's 3. Dot Book also leads on iOS requirement (15.0 vs 18.2). PageGrain's advantage is update cadence (every 9 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. PageGrain sells 3 in-app purchases, starting at $1.99 per month. Dot Book asks for nothing beyond the download.

Dot Book ships an update every 2 months, PageGrain every 9 days. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Dot Book | PageGrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Size | 35 MB | 135 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dot Incorporation](https://appshunter.io/developer/1180412559) | [Du Wenyu](https://appshunter.io/developer/1896486913) |

## What reviewers say

### Dot Book

[App page](https://appshunter.io/ios/app/dot-book/id6464456781)

**In-app purchases:** none


### 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 Dot Book free?

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

### Is PageGrain free?

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

### Do Dot Book or PageGrain have ads?

Neither Dot Book nor PageGrain shows ads.

### Which is updated more often, Dot Book or PageGrain?

Dot Book ships an update every 2 months, and PageGrain every 9 days. Most recently, Dot Book was updated on October 11, 2026 and PageGrain on September 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.*