Comparison

Knock, knock, knock! vs Polyglutt

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive page turning
  • Recordable narration
  • Multiple language options
  • Classic children's story
  • Designed for toddlers
Read 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

About

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.

Highlights
  • 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
Features
Read 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

Knock, knock, knock!4 screens
Polyglutt4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Knock, knock, knock! versus Polyglutt: the parameters behind the verdict, then further details
ParameterKnock, knock, knock!Polyglutt
Price$2.99Free — better
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 48 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better15.6
Further details — not scored
Size121 MB52 MB
Age rating4+4+
DeveloperAlfabetaILT Inlaesningstjaenst AB

Customer experience

Knock, knock, knock!

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Polyglutt

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Knock, knock, knock!

No in-app purchases

None

Polyglutt

No in-app purchases

Questions

Is Knock, knock, knock! free?
Knock, knock, knock! costs $2.99, with no in-app purchases.
Is Polyglutt free?
Polyglutt is free to download, with no in-app purchases.
Do Knock, knock, knock! or Polyglutt have ads?
Neither Knock, knock, knock! nor Polyglutt shows ads.
Which is updated more often, Knock, knock, knock! or Polyglutt?
Knock, knock, knock! ships an update every 48 months, and Polyglutt every 3 weeks. Most recently, Knock, knock, knock! was updated on September 22, 2026 and Polyglutt on September 20, 2026.

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