Comparison

Klax Teacher vs ProtAct17

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

Head to head
About

Klax Teacher

Features
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With Klax Teacher from Klax you can administrate everything about the daycare, including the children, parents and teachers. Klax Teacher is a tool for creating diaries, news, bulletins, accessing the children’s index cards, as well as communicating with other users and much more.

About

ProtAct17

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The app aims to provide children and adolescents with a playful approach to the complex topic of sustainability and the 17 sustainability goals of the United Nations. ProtAct17 imparts knowledge in an age-appropriate and interactive way, arouses curiosity and the spirit of research through virtual and real experiments, addresses current and future challenges for the environment, economy and society and shows their own – albeit small – possibilities for action. Inspiring and empowering students to protect the environment (Protect) and to take action in line with the 17 sustainability goals of the United Nations (Act) – this is the idea behind the app. Using the scan mode, children can bring the app's poster to life and explore the topics step by step.

Screenshots

Klax Teacher3 screens
ProtAct174 screens

Verdict

The call

The clearest difference is update cadence: Klax Teacher at every 2 months against ProtAct17's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Klax Teacher ships an update every 2 months, ProtAct17 every 9 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

Scorecard1 real difference Β· 5 level
Klax Teacher versus ProtAct17: the parameters behind the verdict, then further details
ParameterKlax TeacherProtAct17
PriceFreeFree
Update frequencyEvery 2 months β€” betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 β€” better13.0
Further details β€” not scored
Size17 MB187 MB
Age rating4+4+
DeveloperKlax Kreativ UG (haftungsbeschraenkt)KIDS interactive GmbH

In-app purchases

None

Klax Teacher

No in-app purchases

None

ProtAct17

No in-app purchases

Questions

Is Klax Teacher free?
Klax Teacher is free to download, with no in-app purchases.
Is ProtAct17 free?
ProtAct17 is free to download, with no in-app purchases.
Do Klax Teacher or ProtAct17 have ads?
Neither Klax Teacher nor ProtAct17 shows ads.
Which is updated more often, Klax Teacher or ProtAct17?
Klax Teacher ships an update every 2 months, and ProtAct17 every 9 months. Most recently, Klax Teacher was updated on November 2, 2026 and ProtAct17 on October 27, 2026.

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