| Core Identity |
| Developer | NASA | Khan Academy | Google | Noctua Software Ltd | 3HOUSE | DEEP FLOW SOFTWARE SERVICES |
| Category | Education | Education | Education | Education | Education | Education |
| Platform | Android, iOS | iOS, Android | Android, iOS | iOS, Android | iOS, Android | iOS, Android |
| Store Metrics |
| Rating | 5.0 / 5 | 4.6 / 5 | 4.7 / 5 | 4.8 / 5 | 4.7 / 5 | 4.7 / 5 |
| Ratings Count | 2 | 105,047 | 133,562 | 35,790 | 155,399 | 33,029 |
| Price | Free | Free | Free | Free | Free | Free |
| Release Date | Sep 25, 2012 | Mar 11, 2012 | Dec 1, 2015 | Apr 7, 2019 | May 30, 2023 | Jul 20, 2023 |
| Last Updated | Jan 30, 2015 | Feb 24, 2026 | Apr 29, 2026 | Feb 22, 2026 | Apr 7, 2026 | Mar 24, 2026 |
| Sentiment & Reviews |
| Sentiment | positive | positive | mixed | - | - | mixed |
| Score | 75/100 | 78/100 | 45/100 | - | - | 55/100 |
| Praises | - Educational content regarding space missions and scientific news keeps younger users engaged with astronomy
| - High-Quality Free Education
- Effective Learning Content
| - Educational content provides a productive alternative to mindless social media scrolling for curious users
| - | - | - AI-driven academic assistance provides clear explanations for complex math and science topics
- Multi-language support allows non-English speakers to access educational content effectively
|
| Complaints | - Technical instability and loading failures during mission tracking events frustrate users seeking real-time updates
| - Login and Authentication Issues
- Technical Performance and Bugs
| - Generative AI features feel intrusive and devalue the human creativity central to the app
| - | - | - Aggressive paywall tactics frustrate users who encounter subscription prompts after limited free usage
- Subscription management issues and billing errors lead to accusations of unfair financial practices
|
| Requests | - Improved interface controls for rotating views and locating specific celestial bodies within the tracking module
| - | - User-controlled toggle to hide generative AI features and return to a traditional art interface
| - | - | - Text summarization features requested to assist with reading and comprehension tasks
|
| Strategic Intel |
| Strengths | - Brand authority as the primary source for official space exploration content
- High-intent engagement during live mission milestones
| - Unrivaled free access model with high brand trust
- Advanced AI tutoring integration (Khanmigo)
- Comprehensive, expert-created video and exercise library
| - Global institutional partnerships provide a deeper content repository than any single museum-focused app
- Computer vision technology functions as a free, high-utility engagement tool for museum visitors
| - Scientific accuracy derived from open-source heritage sustains high user trust
- Telescope control protocols create high switching costs for hobbyists
- Minimalist UI reduces cognitive load for casual stargazers
| - | - High-utility scan-to-solve tool drives daily active usage
- Multi-language support expands reach into non-English markets
- Broad feature set increases session value
|
| Weaknesses | - Technical instability during high-traffic events
- 0.7★ Android-iOS rating gap on majority Android base
- Unintuitive navigation in the tracking module
| - Critical authentication and login stability issues
- Mobile app performance and latency compared to web
- Less granular skill tracking than commercial rivals like IXL
| - Lack of landscape mode on tablets creates a usability barrier for horizontal art viewing
- Aggressive AI integration drives negative sentiment among core users
| - Premium tier lacks cross-platform notification parity
- No wearable integration limits active outdoor engagement
- Android-iOS rating gap suggests inconsistent performance
| - | - Aggressive paywalling after limited free usage
- Recurring reports of subscription billing errors
- AI parsing inaccuracies on complex math
|
| Pricing | free | free | free | freemium | free | freemium |
| Momentum | Zombie | Maintenance | Active | - | Intense | Maintenance |
| Update Cadence | 2 versions, 1 majors/6mo, ~4086d avg | 5 versions, ~93d avg | 5 versions, 2 majors/6mo, ~13d avg | - | 5 versions | 2 versions, ~14d avg |
