Comparison

What´s missing here? vs Kleutereiland (Klein)

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

Head to head
About

What´s missing here?

This game challenges young children to visually scan and identify missing objects in a series of scenes. It's designed to improve memory, observation, and early logic skills, offering both single-player and two-player modes for added fun.

Highlights
  • Visual scanning and discrimination
  • Memory and observation skill development
  • Single-player and two-player modes
  • Early logic challenges
  • Progressive difficulty levels
  • Bright graphics and easy gameplay
Features
Read full description

"Professor Kim is a challenging visual scanning and discrimination game for preschoolers and early elementary children. You can play alone or against another, which really ups the fun factor. I have been using this game clinically, since early 2013, and it has never been off my iPad despite frequent rotation of other apps. Most kids respond immediately to its bright graphics and easy game play. It’s wonderful for teachers who may have kids that have difficulty translating what’s on the board to paper, or being able to sustain attention when visually following one target to another, as in contrast and comparison tasks." TeachersWithApps.com *** In summary this app is an excellent source for early learners needing to learn how to visually scan, discriminate and be able to target looking from one point to another. These are essential skills needed to be able to function within the classroom and manage oneself within a social environment. teacherswithapps.com *** is a great fun and entertaining game, perfect to stimulate kids memory and observation skills. Your kids will be engaged and focused. You can play it alone but we liked the 2 players mode a lot. Lots of fun, hours of play ... and if you want to be the fastest one you will find out that it might be even more challenging that your first thought! *** FunEducationalApps.com "Innovative and challenging memory game for one or two players that completely avoids the "matching pairs" cliche." smartappsforkids.com "There is a lot to love about this app, but what excites me most is that this is something new that fills a gap and meets educational needs. The bottom line is that it is different, useful, and lots of fun to play." onsarahsipad.wordpress.com *** Can you spot the missing sea creature, before the other player? This classification experience presents this type of simple early logic challenge, starting with smaller, easier sets, and progressing to harder challenges, for two players. For focused logic/memory experience this app is worth considering. We noticed no external links, ads or hidden agendas.*** Featured Review in Children´s Technology Review, Sept 2012, Vol.20, No9, Issue 150 A great game for one or two players! Who can spot the missing animal or object first? Is it the octopus, the diving elephant or the clam? Help Professor Kim in his submarine to find whats missing in the deep blue sea! This game is great fun for two kids to play together or for parents and kids! You might aswell play alone and race against the time. Be quick to spot the missing creature! Best for kids from 4 to 8 and their parents! This game is a Kim´s Game and helps to develop memory and observation skills! *** How to play *** One Player: - You can see one animal or object more on your screen than in the water. - Try to tap as fast as you can on the missing animal or object on your screen. - The new level will be unlocked as soon as you solve the level without a mistake - There are two counters. The upper counter shows the highscore. Two players: - You can see one animal or object more on your screen than in the water. - Be quick and tap faster than your partner onto the missing animal or object on your screen. - The golden fish shows you who won ===================== Disclosures for Parents We take your kids privacy and safety serious. This app includes * no links * no ads * no tracking functions * no share functions * no IAP ======================

About

Kleutereiland (Klein)

Features
Read full description

This application is developed for children between 3 and 6 years old. They can practice preparatory reading, counting, calculating, number recognition, and much more. Many goals for primary school education can be practiced with this application. This application has been designed for children between 3 and 6 years old. Most children cannot read yet, so all explanations, questions and assignments are spoken out loud. So the children can work independently with this application. The clear, bright and beautifully designed application enables the children to practice the assignments faster and better, because they can play the game by themselves. By visiting the settings menu, the teacher or parents can disable or enable various parts of the application or change the settings of the games. For example, you can able practicing numbers until 5, 10, 15 or 20 and you can select how many assignments are to be done before the final score is shown. Kind regards, Teacher Dennis

Screenshots

Kleutereiland (Klein)4 screens

Verdict

The call

The clearest difference is ads: What´s missing here? at none against Kleutereiland (Klein)'s shown. What´s missing here? also leads on iOS requirement (6.0 vs 13.0). Kleutereiland (Klein)'s advantage is device support (3 vs 1). On price, update cadence and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

What´s missing here? ships an update every 6 months, Kleutereiland (Klein) every 12 months. The most recent releases landed on November 1, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
What´s missing here? versus Kleutereiland (Klein): the parameters behind the verdict, then further details
ParameterWhat´s missing here?Kleutereiland (Klein)
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews95.7% of reviews—
Number of ratings3 — better—
Update frequencyEvery 6 months — betterEvery 12 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS6.0 — better13.0
Further details — not scored
Size44 MB60 MB
Age rating4+4+
Developerappp media UGDennis van Duin

In-app purchases

None

What´s missing here?

No in-app purchases

None

Kleutereiland (Klein)

No in-app purchases

Questions

Is What´s missing here? free?
What´s missing here? is free to download, with no in-app purchases.
Is Kleutereiland (Klein) free?
Kleutereiland (Klein) is free to download, with no in-app purchases.
Do What´s missing here? or Kleutereiland (Klein) have ads?
Kleutereiland (Klein) shows ads; What´s missing here? does not.
Which is updated more often, What´s missing here? or Kleutereiland (Klein)?
What´s missing here? ships an update every 6 months, and Kleutereiland (Klein) every 12 months. Most recently, What´s missing here? was updated on November 1, 2026 and Kleutereiland (Klein) on October 16, 2026.

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