Comparison

Exoplanet vs SeaLevels

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

SeaLevels

This app provides an educational tool to inform users about the realities of rising sea levels and their impact on humanity. It aims to foster understanding and encourage action by presenting scientific consensus on climate change in an accessible format.

Highlights
  • Environmental education
  • Climate change information
  • Sea level rise data
  • Informational tool
  • Promotes awareness
Features
Read full description

The Sea Levels Project was born out of a love for the environment, a concern over inaction, and a lack of simple to use educational tools. Almost all scientists agree that the global climate is changing, and that sea levels are rising, with an increase in the rate of rise very likely to be caused by humans. When it comes to action it is of no consequence whether the cause of climate change is man-made or natural - it still poses an increasing threat to humanity.  We believe that education is an essential step for us as a species to find a solution. Whilst no mobile application could ever hope provide an answer we can help by providing an informational tool.

Screenshots

Exoplanet4 screens
SeaLevels4 screens

Verdict

The call

The clearest difference is in-app purchases: SeaLevels at none against Exoplanet's 7. SeaLevels also leads on review sentiment (100% vs 91%). Exoplanet's advantage is rating (4.7 vs 4.3) and update cadence (every 2 weeks vs every 7 months). On price and ads 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. Exoplanet sells 7 one-off in-app purchases. SeaLevels asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Exoplanet holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Exoplanet has 978 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 91% of Exoplanet's written reviews are positive against 100% of SeaLevels's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Exoplanet ships an update every 2 weeks, SeaLevels every 7 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

Scorecard8 real differences · 2 level
Exoplanet versus SeaLevels: the parameters behind the verdict, then further details
ParameterExoplanetSeaLevels
PriceFreeFree
Rating4.7 (978 ratings) — better4.3 (7 ratings)
Positive reviews90.9% of reviews100.0% of reviews — better
Number of ratings978 — better7
Update frequencyEvery 2 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size105 MB0 MB
Age rating4+4+
DeveloperHanno ReinRobert Smith

Customer experience

Exoplanet

All ratings956 ratings
Positive93.0%
Neutral2.0%
Negative5.0%
Written reviews485 reviews
Positive90.9%
Neutral3.3%
Negative5.8%

SeaLevels

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
Show 4 more
  • 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

SeaLevels

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Exoplanet

One-time7
  • Galaxy Clusters and CMB$0.99
  • Asteroids$0.99
  • Gaia Stars$0.99
Show 4 more
  • S-Stars$0.99
  • Catalogues$0.99
  • Developer Appreciation Coffee$1.99
  • Kepler Add-on$2.99
None

SeaLevels

No in-app purchases

Questions

Is Exoplanet free?
Exoplanet is free to download, with in-app purchases available.
Is SeaLevels free?
SeaLevels is free to download, with no in-app purchases.
Which has better reviews, Exoplanet or SeaLevels?
Exoplanet is rated higher. Exoplanet averages 4.7 out of 5 from 978 ratings, while SeaLevels averages 4.3 from 7 ratings.
Do Exoplanet or SeaLevels have ads?
Neither Exoplanet nor SeaLevels shows ads.
Which is updated more often, Exoplanet or SeaLevels?
Exoplanet ships an update every 2 weeks, and SeaLevels every 7 months. Most recently, Exoplanet was updated on October 31, 2026 and SeaLevels on November 2, 2026.

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