ProtAct17 vs studycharge
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
ProtAct17
Read full descriptionHide full description
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 โ albeit small โ 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) โ 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.
studycharge
Read full descriptionHide full description
Create your own flashcards and master any topic with smart spaced repetition powered by the SM-2 algorithm. Go beyond simple memorization by adding cloze texts to deepen your understanding. Learn together with the community by discovering and sharing public flashcard sets, or collaborate privately with friends. Turn learning into a challenge by competing head-to-head and see who performs best. Stay motivated with weekly leaderboards among your followers and track who learns the most cards each week. Whether you study alone or with others, this app makes learning efficient, social, and engaging. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: ProtAct17 at none against studycharge's 2. ProtAct17 also leads on iOS requirement (13.0 vs 15.1). studycharge's advantage is update cadence (every 4 days vs every 9 months). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. studycharge sells 2 in-app purchases, starting at $3.99 per month. ProtAct17 asks for nothing beyond the download.
ProtAct17 ships an update every 9 months, studycharge every 4 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | ProtAct17 | studycharge |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 187 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | KIDS interactive GmbH | Tim Stieger |
In-app purchases
ProtAct17
No in-app purchases
studycharge
- Premium Monthly$3.991 Month
- Premium Lifetime$34.99
Questions
Is ProtAct17 free?
Is studycharge free?
Do ProtAct17 or studycharge have ads?
Which is updated more often, ProtAct17 or studycharge?
Other comparisons















