Comparison

ProtAct17 vs P51

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

Head to head
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.

About

P51

Features
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The P51 application is built by La Ruta del Clima thanks to the collaboration of NEXT, its objective is to generate information and knowledge about the effects of climate change from communities on various issues such as infrastructure, changes in the territory, effects on human rights, loss of species and territory, among others.Β  Damage and loss respond to the negative outcome or consequences of Climate Change that have exceeded the limits of adaptation.Currently, many communities in developing countries have to live with these consequences and are not visible in decision-making spaces due to the lack of information and ignorance of these consequences in the daily lives of many people. It is for this reason that through this tool you can participate in the collection and recording of data that will help to demonstrate and modify the responses of various sectors such as planning, risk management and political spaces in the face of climate change. The greatest importance of using the application is that the first line of information gathering is you as users, who live daily the damages and losses in your communities and for this reason it is defined as a citizen science tool. This is how the collection of this information allows, through the analysis of the various reports, to define actions and repairs that respond to the communities. The P51 App is running on the SPOTTERON Citizen Science Platform at www.spotteron.net.

Screenshots

ProtAct174 screens
P514 screens

Verdict

The call

The clearest difference is update cadence: P51 at every 2 weeks against ProtAct17's every 9 months. P51 also leads on iOS requirement (11.0 vs 13.0). 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

ProtAct17 ships an update every 9 months, P51 every 2 weeks. The most recent releases landed on September 13, 2026 and September 16, 2026 respectively.

Scorecard2 real differences Β· 4 level
ProtAct17 versus P51: the parameters behind the verdict, then further details
ParameterProtAct17P51
PriceFreeFree
Update frequencyEvery 9 monthsEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 β€” better
Further details β€” not scored
Size187 MB45 MB
Age rating4+17+
DeveloperKIDS interactive GmbHSPOTTERON Gmbh

In-app purchases

None

ProtAct17

No in-app purchases

None

P51

No in-app purchases

Questions

Is ProtAct17 free?
ProtAct17 is free to download, with no in-app purchases.
Is P51 free?
P51 is free to download, with no in-app purchases.
Do ProtAct17 or P51 have ads?
Neither ProtAct17 nor P51 shows ads.
Which is updated more often, ProtAct17 or P51?
ProtAct17 ships an update every 9 months, and P51 every 2 weeks. Most recently, ProtAct17 was updated on September 13, 2026 and P51 on September 16, 2026.

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