# Simple Book Manager vs Book Diary

The clearest difference is ads: Book Diary at none against Simple Book Manager's shown. Book Diary also leads on update cadence (every 2 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Simple Book Manager sells 2 in-app purchases, starting at $2.99 per month and Book Diary sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Simple Book Manager ships an update every 2 months, Book Diary every 2 days. The most recent releases landed on September 9, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Simple Book Manager | Book Diary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 27 MB | 2 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SPARKLE AND, K.K.](https://appshunter.io/developer/1572402899) | [VADZIM TSITKO](https://appshunter.io/developer/1713712145) |

## What reviewers say

### Simple Book Manager

[App page](https://appshunter.io/ios/app/simple-book-manager/id6753295236)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MonthlySubscription | $2.99 | per month |
| annual subscription | $29.99 | per year |


### Book Diary

[App page](https://appshunter.io/ios/app/book-diary/id6757989246)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |


## Frequently asked questions

### Is Simple Book Manager free?

Simple Book Manager is free to download, with in-app purchases available.

### Is Book Diary free?

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

### Do Simple Book Manager or Book Diary have ads?

Simple Book Manager shows ads; Book Diary does not.

### Which is updated more often, Simple Book Manager or Book Diary?

Simple Book Manager ships an update every 2 months, and Book Diary every 2 days. Most recently, Simple Book Manager was updated on September 9, 2026 and Book Diary on August 22, 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.*