| Core Identity |
| Developer | in a nutshell - kurzgesagt GmbH | Appelio | GamifyIt | Vito Technology Inc. | Vito Technology Inc. | Vito Technology Inc. | Denis Chashchin | JSDT SOLUTIONS | iNaturalist | StudySwitch, Inc. |
| Category | Education | Education | Education | Reference | Education | Education | Education | Education | Education | Education |
| Platform | Android, iOS | Android, iOS | iOS | iOS, Android | iOS, Android | iOS, Android | iOS, Android | Android | iOS, Android | Android, iOS |
| Store Metrics |
| Rating | 4.9 / 5 | 4.7 / 5 | 4.8 / 5 | 4.6 / 5 | 4.7 / 5 | 4.7 / 5 | 4.9 / 5 | 4.5 / 5 | 4.8 / 5 | 4.7 / 5 |
| Ratings Count | 2,499 | 33 | 292 | 9,602 | 25,016 | 66,644 | 2,630 | 1,898 | 30,771 | 15,718 |
| Price | USD2.99 | Free | $5.99 | Free | Free | $2.99 | Free | Free | Free | Free |
| Release Date | Sep 20, 2020 | Nov 26, 2025 | Feb 6, 2014 | Oct 4, 2012 | Nov 5, 2008 | Aug 21, 2014 | Jan 11, 2012 | Apr 18, 2018 | Mar 9, 2018 | May 25, 2022 |
| Last Updated | Nov 10, 2025 | Apr 14, 2026 | May 18, 2026 | May 6, 2026 | Apr 30, 2026 | May 12, 2026 | Jan 25, 2026 | Apr 25, 2026 | Apr 10, 2026 | Apr 24, 2026 |
| Sentiment & Reviews |
| Sentiment | excellent | excellent | excellent | mixed | terrible | mixed | excellent | - | negative | - |
| Score | 85/100 | 85/100 | 95/100 | 45/100 | 15/100 | 65/100 | 85/100 | - | 35/100 | - |
| Praises | - Educational scale visualization provides a calming and perspective-shifting experience for science enthusiasts
- Ad-free experience and donation-based model foster deep user trust and appreciation
- High-quality artistic style and animation keep users engaged during long exploration sessions
| - Long-term reliability of the sky mapping tool keeps users engaged over many years
- Lean and ad-free interface provides a focused experience for identifying celestial objects
- Open source nature fosters a sense of community and genuine labor of love
| - Educational scale exploration provides deep perspective on the universe from subatomic to cosmic levels
- High quality audio narration and voice options improve the accessibility of complex scientific information
- Monetization model remains user-friendly with no intrusive advertisements or subscription requirements
| - High-fidelity visual representations of planets and space environments keep users engaged during exploration sessions
| - Long-term users value the meditative music and accurate celestial navigation tools provided by the app
| - Educational depth regarding astronomical objects provides significant value for novice stargazers and hobbyists
| - Comprehensive periodic table details provide high educational value for chemistry students
| - | - Gamified nature exploration challenges provide a compelling incentive for users to get outdoors
- Live camera identification provides immediate educational value for users exploring local natural environments
| - |
| Complaints | - Application launch failures and immediate crashes on specific mobile hardware post-update
- Outdated scientific facts and missing celestial objects diminish the educational accuracy
| - Inaccurate celestial positioning and calibration issues frustrate users following the latest update
- Performance lag and instability on tablet devices disrupt the viewing experience
| - Minor typographical errors in object descriptions distract from the otherwise high quality educational content
| - Frequent application freezes and launch failures prevent users from accessing the core simulation content
| - Intrusive video advertisements appearing every few seconds render the core stargazing experience completely unusable
| - Inaccurate sky tracking and compass calibration issues prevent reliable identification of celestial objects
| - Missing advanced chemical reaction features limit utility for specialized chemistry coursework
| - | - Camera performance regressions following the latest update cause frequent freezing and application crashes
- Inaccurate species identification model frequently misclassifies common organisms as unrelated species or broad categories
- Loss of historical observation data following reinstallation or update cycles frustrates long-term users
| - |
| Requests | - Audio narration of descriptions would improve accessibility for younger children and visually impaired users
- Interactive sandbox mode for direct size comparison between multiple selected objects
| - Landscape orientation support for tablets would improve the usability of the sky map
- Camera overlay functionality would help users match digital maps to physical celestial bodies
| - Expanded language support for non-English speakers to improve accessibility for international families
- Additional astronomical objects and scientific phenomena to broaden the scope of the zoom experience
| - Expanded exploration capabilities including zoom-out features to view the wider galaxy or multiverse
| - Users request a one-time purchase option to remove advertisements instead of a recurring subscription model
| - Weather forecast integration for stargazing would provide practical utility for planning observation sessions
| - Expanded language support for Hindi and Russian to reach broader student demographics
| - | - Cloud synchronization for observation data to prevent permanent loss during app reinstallation
| - |
| Strategic Intel |
| Strengths | - High-fidelity artistic style creates a unique educational environment
- Kurzgesagt brand authority drives organic conversion
- Ad-free model builds long-term user trust
| - Open-source community model reduces R&D costs
- Ad-free interface creates high trust with casual users
- Long-term utility builds multi-year retention
| - Scale comparison engine functions as a brand moat, justifying the $5.99 upfront price.
- 21-language library functions as a B2B distribution barrier into international school partnerships.
- Ad-free experience builds high user trust, sustaining a 4.85 rating.
| - High-fidelity 3D rendering engine sustains organic interest
- Immersive audio design creates a distinct peaceful atmosphere
- Time Machine interface provides unique historical exploration depth
| - Apple Design Award heritage sustains initial trust
- AR sky-overlay mechanism provides high visual utility
| - AR-driven interface lowers the barrier to entry for casual users
- 3D model depth functions as a brand moat for educational utility
| - Spatial computing integration on Apple Vision Pro establishes category authority
- Home screen widgets drive daily habit formation via passive memorization
| - | - Proprietary identification model derived from global community observations
- Privacy-first architecture lowers initial friction for families
- Non-profit status builds high institutional trust
| - |
| Weaknesses | - Immediate launch crashes on newer hardware
- Outdated scientific data
- Lack of audio narration for accessibility
| - 0.52★ Android-iOS rating gap indicates platform-specific instability
- Calibration errors post-update drive churn
- No landscape orientation support for tablets
| - One-time purchase model limits recurring revenue compared to subscription-based competitors.
- Typographical errors in descriptions distract from the high-fidelity scientific content.
- Lack of real-time sensor integration limits interactivity compared to Stellarium Mobile.
| - Frequent launch failures on the latest version
- In-app purchase restoration failures drive negative sentiment
- Aggressive ad frequency alienates legacy users
| - Ad frequency disrupts core stargazing utility
- 0.7★ Android-iOS rating gap indicates technical neglect
- Legacy user churn due to subscription paywalls
| - Compass calibration failures persist across devices
- Monetization structure creates friction post-purchase
| - Missing support for complex cyclic compounds limits utility for advanced students
- Lack of language localization restricts reach in competitive exam markets
| - | - Local-only data storage causes permanent loss for users
- Camera stability regressions in the latest update
- Identification model frequently defaults to broad categories
| - |
| Pricing | freemium | free | paid | freemium | freemium | paid | free | free | free | freemium |
| Momentum | Zombie | Active | Maintenance | Maintenance | Maintenance | Maintenance | Maintenance | - | Maintenance | Intense |
| Update Cadence | 2 versions, ~643d avg | 3 versions, 1 majors/6mo, ~7d avg | 2 versions, 2 majors/6mo, ~77d avg | 4 versions, ~14d avg | 4 versions, 1 majors/6mo, ~365d avg | 4 versions, 2 majors/6mo, ~28d avg | 2 versions, 1 majors/6mo, ~70d avg | - | 5 versions, ~8d avg | 5 versions |
