Cosmology vs Pocket Planets
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cosmology
Explore the universe with stunning high-resolution images of celestial bodies. Journey through space, visiting planets and their moons, while learning about the evolution of space, time, and matter. Ponder the profound mysteries of existence.
- High-resolution images of planets, nebulae, and galaxies
- Interactive space travel to planets and moons
- Learn about the evolution of space, time, and matter
- Expert narration by Dr. Aaron Day
- Exploration of existential mysteries of the universe
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Explore the universe with 100s of high resolution images of planets, nebulae, galaxies, and more. Travel through space, visiting every planet and their major moons. Learn about the creation of space, time, and matter, and their evolution into stars, galaxies, and planets in the present day. Ponder the deep, existential mysteries of the universe. The story of creation is told by Dr. Aaron Day. Dr. Day earned his Ph.D. at the University of California, San Diego for research in cosmology.
Pocket Planets
Explore our solar system with detailed information on planets, moons, and astronauts. Track who is currently in space and receive notifications for new launches. Access NASA images and compare celestial body characteristics.
- Detailed planet and moon data
- Astronaut information and missions
- Real-time space occupancy
- Launch notifications
- NASA image gallery
- Celestial body comparisons
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Pocket Planets gives you all the information you need about our solar system and human activity in space. Learn more about all 565 astronauts who been to space. What was their mission? How long had they been up there? See who is in space now! Get notified when somebody goes into space. Get up to date information about every planet and moon in the solar system. Including: - Physical characteristics: mass, radius, density, gravity, escape velocity - Orbital characteristics: real-time distance from the Sun and Earth, orbital period, orbital speed, eccentricity, apsis, periapsis, visualise orbit - Atmosphere: pressure, atmospheric composition - Images from Nasa - Moons: compare their size and distance
Screenshots
Verdict
The clearest difference is ads: Cosmology at none against Pocket Planets's shown. Cosmology also leads on review sentiment (89% vs 67%) and ratings volume (505 vs 22). On price, rating, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.7 for Cosmology against 4.6 for Pocket Planets. That said, the two scores are not equally well evidenced: Cosmology has 505 ratings behind it against 22, so its average is the more settled of the two. Written reviews are what separate them: 89% of Cosmology's written reviews are positive against 67% of Pocket Planets's.
Cosmology ships an update monthly, Pocket Planets every 3 weeks. The most recent releases landed on October 15, 2026 and September 8, 2026 respectively.
| Parameter | Cosmology | Pocket Planets |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (505 ratings) — better | 4.6 (22 ratings) |
| Positive reviews | 88.6% of reviews — better | 66.7% of reviews |
| Number of ratings | 505 — better | 22 |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 190 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Aaron Day | Ad Lunam Kereskedelmi es Szolgaltato Korlatolt Felelossegu Tarsasag |
Customer experience
Cosmology
Pocket Planets
Bugs and requests
Cosmology
Reported bugs
2 issues- Image display interference/hacking concerns
- App feels incomplete in certain sections
Requested features
6 requests- More interactive activities and engagement features
- Text-to-speech functionality
- More detailed explanations for beginner-level users
- Additional sub-categories and content sections
- Regular updates with current astronomical images
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- Alternative cosmological perspectives or viewpoints
Pocket Planets
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cosmology
No in-app purchases
Pocket Planets
No in-app purchases
Questions
Is Cosmology free?
Is Pocket Planets free?
Which has better reviews, Cosmology or Pocket Planets?
Do Cosmology or Pocket Planets have ads?
Which is updated more often, Cosmology or Pocket Planets?
Other comparisons
