LearnStrike vs Black hole finder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LearnStrike
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With LearnStrike, you can quickly launch your own Experience Based Learning app. The app enhances your existing learning resources and systems, aiding your target audience in transitioning from understanding to action. Theory is converted into engaging learning challenges and short games that prompt action and experimentation. Make videos interactive, link games, quizzes, and reflections to your existing knowledge sources and learning management system. Employees actively practice new skills: first attempting and experiencing the complexity, then delving deeper into the subject and striving to improve their scores. LearnStrike makes learning enjoyable. Create your own Experience Based Learning app in 5 steps!
Black hole finder
Contribute to cutting-edge astronomical research by identifying potential black holes and rare elements. Sift through real-time telescope images to detect fleeting light signals from cosmic events and potentially earn co-authorship on scientific publications.
- Analyze real-time telescope images
- Detect light signals from cosmic events
- Contribute to scientific research
- Potential co-authorship on publications
- Learn about black holes and neutron star mergers
- Direct telescopes for additional measurements
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Welcome to the Black Hole Finder, an exciting citizen science project dedicated to discovering black holes, particularly those formed from the fusion of two neutron stars. You have the unique opportunity to contribute to this cutting-edge research from the comfort of your home, using your phone, tablet, or computer. Our app brings the cosmos to your fingertips. When two neutron stars merge, they create a powerful event, sending gravitational waves through space. These events are detected by our gravitational wave detectors, which alert us to potential black hole formations. Mergers of this kind not only create black holes but also give birth to rare Earth elements such as Iodine, Gold, and Cerium. All these elements, especially Iodine, play crucial roles in supporting life as we know it. In addition to gravitational waves, these cosmic collisions emit light signals. The chase is on to detect these signals with our trio of specially designed BlackGEM telescopes located in Chile. The catch is that the detectors only provide a general localization of the event and the light signals are fleeting. Therefore, we need to act quickly to capture these signals before they fade away after a few days or a week at most. That's where you come in! Using our app, you will sift through real-time images of the sky taken by our BlackGEM telescopes. You will help us spot these light signals, effectively identifying potential new black holes. Not only will you be possibly among the first to set eyes on the light from these celestial events, but with some training, you may also direct telescopes to take additional measurements of intriguing objects. Your contributions to science won't go unnoticed. Participants who make significant discoveries will be offered co-authorship on scientific publications that result from their findings. We also provide training and guidance to enrich your understanding of the cosmos. The Black Hole Finder project is not just about making significant scientific contributions. It's about engaging with the wonders of the universe, learning about the intricate processes that drive its dynamics, and having fun while doing it! So, join us on this thrilling journey of discovery and exploration. Download the Black Hole Finder app now and start your cosmic adventure!
Screenshots
Verdict
The clearest difference is update cadence: Black hole finder at every 10 days against LearnStrike's every 4 weeks. Black hole finder also leads on iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
LearnStrike ships an update every 4 weeks, Black hole finder every 10 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | LearnStrike | Black hole finder |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.1 (7 ratings) — better |
| Positive reviews | — | 62.5% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | Every 4 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 283 MB | 81 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Growth.com | DDQ |
In-app purchases
LearnStrike
No in-app purchases
Black hole finder
No in-app purchases
Questions
Is LearnStrike free?
Is Black hole finder free?
Do LearnStrike or Black hole finder have ads?
Which is updated more often, LearnStrike or Black hole finder?
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