Knock, knock, knock! vs Polyglutt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Knock, knock, knock!
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.
- Interactive page turning
- Recordable narration
- Multiple language options
- Classic children's story
- Designed for toddlers
Read full descriptionHide full description
The book Knock, knock, knock! is one of the best selling children's books in Sweden. In this app we've adapted a classic book for small children. – Choose language by pressing the icon in the upper left corner. - Turn page by tapping on the doors (three times for big doors, one time for small doors) or by swiping to the next page. – You can also record your own reading of the book!Press the microphone in the upper left corner and follow the instructions. Suitable for children from 1 year. Illustrations and text: Anna-Clara Tidholm Publisher: Alfabeta Bokförlag AB Produced by: Nekomata Games/5Monkeys
Polyglutt
A digital library offering narrated and browsable children's books for preschool. Features books in over 70 languages, including sign language and audio descriptions, with pedagogical support for language development.
- Digital library of children's books
- Narrated and browsable content
- Books in over 70 languages
- Sign language and audio descriptions
- Pedagogical support for language development
- Discussion questions and key vocabulary
Read full descriptionHide full description
Polyglutt är ett digitalt bibliotek som tillhandahåller inlästa, bläddringsbara barnböcker för förskolan. Majoriteten av böckerna är inlästa på svenska och det finns ett stort antal böcker med ljud eller text på andra språk, t.ex. arabiska, engelska, finska och somaliska. Det finns även böcker på TAKK och svenskt teckenspråk, samt syntolkning. Idag finns böcker inlästa på över 70 språk, nya språk tillkommer kontinuerligt. Polyglutt innehåller utvalda, kvalitativa böcker som lämpar sig bra i det språkutvecklande arbetet i förskolan. Innehållet lämpar sig också bra för att stärka barnens modersmål. Många böcker har också boksamtalsfrågor och betydelsebärande ord som ger pedagogiskt stöd i läsningen. I Polyglutt finns nu också ett ständigt växande bibliotek av pedagogiskt stöd i form av teman, material att arbeta med avkodning osv. Polyglutt består av appen med tillhörande handledning med pedagogiska tips. Handledningen tillhandahålls via appen. Abonnemang krävs för att kunna använda Polyglutt.
Screenshots
Verdict
The clearest difference is price: Polyglutt at Free against Knock, knock, knock!'s $2.99. Polyglutt also leads on update cadence (every 3 weeks vs every 48 months). Knock, knock, knock!'s advantage is iOS requirement (9.3 vs 15.6). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Polyglutt 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, Polyglutt every 3 weeks. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.
| Parameter | Knock, knock, knock! | Polyglutt |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 48 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 15.6 |
| Further details — not scored | ||
| Size | 121 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Alfabeta | ILT Inlaesningstjaenst AB |
Customer experience
Knock, knock, knock!
Polyglutt
In-app purchases
Knock, knock, knock!
No in-app purchases
Polyglutt
No in-app purchases
Questions
Is Knock, knock, knock! free?
Is Polyglutt free?
Do Knock, knock, knock! or Polyglutt have ads?
Which is updated more often, Knock, knock, knock! or Polyglutt?
Other comparisons















