Comparison

Solar Coaster vs Earth's Core

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Solar Coaster

Visualize the precise movements of the Sun and Moon with 3D graphs, eclipse details, and rise/set times. This app offers offline calculations for celestial positions and moon phases, making it ideal for astronomy enthusiasts.

Highlights
  • 3D movement graphs
  • Eclipse information and circumstances
  • Rise and set times
  • Moon phase and illumination
  • Offline astronomical data
  • Local horizontal coordinate system
Features
Read full description

Solar Coaster provides accurate position, time, motion and eclipse information for Earth's nearest star, Sol, our Sun, and nearest celestial body, Luna, our Moon. Information includes 3D movement graphs, upcoming eclipses and their circumstances, rise and set times, positions, distances and velocities, moon phase, illumination and crescent rotation. Solar Coaster automatically updates its state every minute, or you can examine minutes randomly. The simulation uses a local horizontal coordinate system when displaying information, which essentially means that your current position is the center of the Universe and all calculated values are relative to you. Sun and Moon positions are also available in equatorial coordinates. Solar Coaster stores enough onboard astronomical data to keep it running through the year 2100 AD, which means that all calculations can be performed locally without the need of a network connection — useful while in the wild chasing an eclipse. Algorithms are accurate at all longitudes, and latitudes between -61° south and +60° north (roughly speaking, locations outside the Polar regions). Of course, you must have Location Services enabled and allow Solar Coaster to access your position for accurate simulation results, and to properly detect eclipses visible at your location. You can also allow Notification Center to keep you informed when those eclipses will occur. Solar Coaster comes in various flavors: for iOS a native App; and for macOS a native App, Screen Saver and Web App.

About

Earth's Core

Explore the internal structure of our planet with a detailed view of Earth's layers. Discover the composition, temperature, and depth of each section, from the crust to the core. This educational tool provides a fascinating look beneath your feet.

Highlights
  • Visualize Earth's internal structure
  • Explore planet layers
  • Discover layer temperatures
  • Learn layer depths
  • Detailed look inside the planet
Features
Read full description

The Earth's Core App lets you see our planet’s internal structure. Just point your mobile to the center of the Earth and experience a deep look inside our planet. Right beneath your feet, thousands of kilometers deep, lies a giant ball of molten Iron as hot as the surface of the sun! Explore the Layers of the Earth and their names, discover the temperature and depth of each layer. Feedback and ideas: please send to support@cosmic-watch.com

Screenshots

Solar Coaster4 screens
Earth's Core3 screens

Verdict

The call

The clearest difference is rating: Solar Coaster at 5.0 against Earth's Core's 4.3. Solar Coaster also leads on update cadence (every 3 months vs every 70 months). Earth's Core's advantage is iOS requirement (12.0 vs 14.0). On price, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Solar Coaster holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

UpkeepUpdate frequency

Solar Coaster ships an update every 3 months, Earth's Core every 70 months. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Solar Coaster versus Earth's Core: the parameters behind the verdict, then further details
ParameterSolar CoasterEarth's Core
PriceFreeFree
Rating5.0 (2 ratings) — better4.3 (4 ratings)
Positive reviews—100.0% of reviews
Number of ratings24 — better
Update frequencyEvery 3 months — betterEvery 70 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS14.012.0 — better
Further details — not scored
Size37 MB54 MB
Age rating4+4+
DeveloperSteve LidieCelestial Dynamics AG

Customer experience

Solar Coaster

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Earth's Core

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Solar Coaster

No in-app purchases

None

Earth's Core

No in-app purchases

Questions

Is Solar Coaster free?
Solar Coaster is free to download, with no in-app purchases.
Is Earth's Core free?
Earth's Core is free to download, with no in-app purchases.
Which has better reviews, Solar Coaster or Earth's Core?
Solar Coaster is rated higher. Solar Coaster averages 5.0 out of 5 from 2 ratings, while Earth's Core averages 4.3 from 4 ratings.
Do Solar Coaster or Earth's Core have ads?
Neither Solar Coaster nor Earth's Core shows ads.
Which is updated more often, Solar Coaster or Earth's Core?
Solar Coaster ships an update every 3 months, and Earth's Core every 70 months. Most recently, Solar Coaster was updated on October 24, 2026 and Earth's Core on October 24, 2026.

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