# Knock, knock, knock! vs Booken

The clearest difference is review sentiment: Booken at 80% against Knock, knock, knock!'s 0%. Booken also leads on price (Free vs $2.99) and update cadence (every 2 months vs every 48 months). Knock, knock, knock!'s advantage is iOS requirement (9.3 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Booken 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, Booken every 2 months. The most recent releases landed on November 1, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Knock, knock, knock! | Booken |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.5 (8 ratings)](https://appshunter.io/ios/app/booken/id6550895937/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 121 MB | 24 MB |
| Requires iOS | **9.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Alfabeta](https://appshunter.io/developer/586381859) | [Riley Brookins](https://appshunter.io/developer/1704731895) |

## 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


### Booken

[App page](https://appshunter.io/ios/app/booken/id6550895937)

This app provides a simple and efficient way to listen to your audiobook files. It offers features for importing, managing, and tracking your listening progress, with playback controls accessible from your phone and Apple Watch.

**Highlights:** Import own audiobook files, Track listening progress, Mark books as finished, Lock screen playback controls, Apple Watch companion app, Variable scrubbing speed, Adjustable playback speed

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

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

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

### Is Booken free?

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

### Do Knock, knock, knock! or Booken have ads?

Neither Knock, knock, knock! nor Booken shows ads.

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

Knock, knock, knock! ships an update every 48 months, and Booken every 2 months. Most recently, Knock, knock, knock! was updated on November 1, 2026 and Booken on October 23, 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.*