Exoplanet vs Earth Rotation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Exoplanet
Explore a vast, interactive database of discovered exoplanets and their host stars. Visualize their physical properties, locations in the night sky, and orbital paths. Discover the observable universe from Earth to the cosmic microwave background with stunning 3D models and augmented reality features.
- Interactive visualizations and animations
- Daily updated exoplanet and host star properties
- 3D Milky Way model with exoplanet locations
- Augmented reality sky map
- Exoplanet orbit and habitable zone visualizations
- Data from multiple exoplanet catalogs
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Exoplanets are planets orbiting stars beyond our own solar system. This app allows you to explore all discovered exoplanets, their measured physical properties, their location in the night sky, and their host stars. An interactive model shows you the entire observable universe, all the way from the surface of the Earth to the cosmic microwave background. This app has been developed by a professional astronomer. Main features: * Interactive visualizations and animations. * Physical properties of all detected exoplanets and their host stars, updated on a daily basis. * Stunning 3D model of our Milky Way showing the location of all known exoplanets. You can zoom into any planetary system, explore how the night sky and the constellations look from the surface of other planets, or zoom out and see other local galaxies and galaxy clusters as well as the cosmic microwave background. * Visualizations of exoplanet orbits and the habitable zone. * Choose between the Open Exoplanet Catalogue, the NASA Exoplanet Archive, and the Extrasolar Planet Encyclopedia (exoplanet.eu). * Push notifications are sent out whenever a new planet is discovered. * Augmented reality sky map: point the phone towards the sky to find an exoplanet! * Interactive multi-touch correlation plots. * Solar System planets, major moons, and asteroids are included. * Explore S-Stars orbiting the black hole at the Galactic Center of our Milky Way * Background information about exoplanets and detection methods. * Full support of planets in binary, triple, quadruple systems and orphan planets. * Real-time ray tracing on the GPU.
Earth Rotation
Explore a 3D simulation of celestial bodies. Adjust rotation speeds, reverse direction, and alter lighting angles. Choose from three distinct Earth visual styles for an interactive learning experience.
- Adjustable rotation speed
- Reverse rotation direction
- Adjustable sun lighting angle
- Three Earth visual styles
- 3D celestial animation
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This is a 3D animation in which the sun, the earth, and the moon rotate. -You can change the rotation speed. The fastest is 1 second, and the slowest is 300 seconds to make one revolution. -It can rotate in the reverse direction, which is not possible in the natural world. -The earth and the moon can change the light from the sun by 30 degrees. -There are three types of earth: night lights, nature, and globes.
Screenshots
Verdict
The clearest difference is price: Exoplanet at Free against Earth Rotation's $0.99. Exoplanet also leads on update cadence (every 2 weeks vs every 22 months) and ratings volume (978 vs 1). Earth Rotation's advantage is in-app purchases (none vs 7) and rating (5.0 vs 4.7). On ads 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
Exoplanet is free to download; Earth Rotation costs $0.99 up front. Exoplanet sells 7 one-off in-app purchases. Earth Rotation asks for nothing beyond the download.
Earth Rotation holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Exoplanet has 978 ratings behind it against 1, so its average is the more settled of the two.
Exoplanet ships an update every 2 weeks, Earth Rotation every 22 months. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.
| Parameter | Exoplanet | Earth Rotation |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.7 (978 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 90.9% of reviews | — |
| Number of ratings | 978 — better | 1 |
| Update frequency | Every 2 weeks — better | Every 22 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 105 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | Hanno Rein | Masahiro Tomosada |
Customer experience
Exoplanet
Earth Rotation
Bugs and requests
Exoplanet
Reported bugs
2 issues- Upgrade purchase issues with Galaxy Clusters and CMB add-on
- Kepler objects of interest disappearing when switching databases
Requested features
9 requests- Add more detailed textures and visuals for exoplanets
- Ability to view multiple databases simultaneously
- Option to see planet surfaces and atmospheres
- Inclusion of dwarf planets in our solar system
- Ability to zoom in on and explore other galaxies
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- Addition of black holes, pulsars, and other celestial objects
- Inclusion of satellite and spacecraft orbits
- Narration or audio commentary for key discoveries
- Ability to view the universe from the surface of planets
Earth Rotation
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Exoplanet
- Galaxy Clusters and CMB$0.99
- Asteroids$0.99
- Gaia Stars$0.99
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- S-Stars$0.99
- Catalogues$0.99
- Developer Appreciation Coffee$1.99
- Kepler Add-on$2.99
Earth Rotation
No in-app purchases
Questions
Is Exoplanet free?
Is Earth Rotation free?
Which has better reviews, Exoplanet or Earth Rotation?
Do Exoplanet or Earth Rotation have ads?
Which is updated more often, Exoplanet or Earth Rotation?
Other comparisons
