# Knock, knock, knock! vs Bokus Reader

The clearest difference is review sentiment: Bokus Reader at 100% against Knock, knock, knock!'s 0%. Bokus Reader also leads on price (Free vs $2.99) and update cadence (monthly vs every 48 months). Knock, knock, knock!'s advantage is iOS requirement (9.3 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Bokus Reader is free to download; Knock, knock, knock! costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Knock, knock, knock! ships an update every 48 months, Bokus Reader monthly. The most recent releases landed on September 22, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Knock, knock, knock! | Bokus Reader |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 121 MB | 98 MB |
| Requires iOS | **9.3** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Alfabeta](https://appshunter.io/developer/586381859) | [Bokus AB](https://appshunter.io/developer/645797312) |

## What reviewers say

### Knock, knock, knock!

[App page](https://appshunter.io/ios/app/knock-knock-knock/id586381856)

This interactive book app brings a classic children's story to life with engaging page-turning and the ability to record your own narration. It's designed for young children to enjoy a beloved tale in a new digital format.

**Highlights:** Interactive page turning, Recordable narration, Multiple language options, Classic children's story, Designed for toddlers

**In-app purchases:** none


### Bokus Reader

[App page](https://appshunter.io/ios/app/bokus-reader/id6446397156)

Access and enjoy your digital e-books and audiobooks on the go. Customize your reading experience with adjustable fonts, themes, and playback speeds. Sync your progress across devices seamlessly.

**Highlights:** E-book reader, Audiobook player, Offline access, Cross-device syncing, Customizable text and playback, Sleep timer

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

**In-app purchases:** none


## Frequently asked questions

### Is Knock, knock, knock! free?

Knock, knock, knock! costs $2.99, with no in-app purchases.

### Is Bokus Reader free?

Bokus Reader is free to download, with no in-app purchases.

### Do Knock, knock, knock! or Bokus Reader have ads?

Neither Knock, knock, knock! nor Bokus Reader shows ads.

### Which is updated more often, Knock, knock, knock! or Bokus Reader?

Knock, knock, knock! ships an update every 48 months, and Bokus Reader monthly. Most recently, Knock, knock, knock! was updated on September 22, 2026 and Bokus Reader on September 30, 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.*