3D Solar System vs Under the sun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Solar System
Explore the solar system in 3D and augmented reality. Learn about planets, moons, stars, and constellations through interactive models, scientific facts, and engaging quizzes. Create your own planets with AI.
- 3D & AR Solar System models
- Scientific facts about celestial bodies
- Interactive star map
- Engaging educational tasks and quizzes
- AI-powered planet creation
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Have you ever wanted to hold the Solar System in your hands? Now you can. 3D Solar System turns your device into a window to the planets, constellations, and stars beyond. Solar System in 3D and AR Travel from the Sun to the icy edge of deep space — a planetary journey of nearly 15 billion kilometers through our cosmic backyard. Study planets, moons, dwarf planets, and two major asteroid fields: the Asteroid Belt between Mars and Jupiter, and the Kuiper Belt beyond Neptune. See how tiny Earth looks next to Jupiter. Zoom in on planets' craters, spin Saturn's rings, and realize just how vast the universe really is. Interactive star map for passionate stargazers A complete map of the night sky with gyroscope support. Tilt your device toward the ceiling and explore constellations like a true space explorer — as if you were standing under a real night sky. Learn each constellation's name, its ancient stories, and the astronomy behind them. Learn to identify Orion, Ursa Major, Cassiopeia and discover dozens more. What you can do: ► Study planets — from scorched Mercury to icy Neptune — along with moons, dwarf planets, and bright constellations like a real astronomer. ► Test your knowledge with quizzes, planet order challenges, "True or False", and mythology questions. Learn who the planets are named after, how long a day lasts on Pluto, and what makes a star shine. ► Create your own planet using AI — design it, name it, and explore it. 714,000+ people have downloaded our app. To put that in perspective: that's 79 times more than all the stars you can see in the night sky with your own eyes. Some features may require a subscription. Free version includes: basic planet info, part of the constellation catalog, some quizzes and tests, star map, and AI planet generation (up to 2 planets). Subscription unlocks: full content about the Solar System, full constellation catalog, all quizzes and tests, planet cross-sections, unlimited AI planet generation. Every planet is different. Each constellation has a story. The universe is waiting — and it's bigger than you ever imagined. Explore all planets, learn every constellation, and become the space explorer you've always wanted to be. Start your journey through space today. Privacy Policy: http://educationterra.com/privacy Terms Of Use: https://educationterra.com/tos
Under the sun
Visualize the sun, moon, and stars with a dynamic world map showing day/night cycles, moon phases, and twilight. Explore time zones, celestial events like eclipses, and tidal calendars for any sea location. This demo version offers a glimpse before purchasing the full experience.
- World map with sun/moon position
- Day and night cycle visualization
- Moon phases and twilight options
- Time zone display with adjustments
- Tidal calendars for sea locations
- Solar and lunar eclipse tracking
- Skyviews of stars and planets
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• Worldmap showing day and night with sun and moon position and moon fases; scrollable and scalable to a preferred spot. • Optionally show various degrees of twilight and moonlight. • Optionally show typical summer/winter ice and snow cover, or download realtime • Put a marks at your favourite places, especially your own location. • Run in realtime or at a chosen speed from a chosen past or future date. • Optionally showing timezones, automatically adjusting for summertime (if any) and including historical changes. • Make skyviews of local sun and moon positions, plus stars and planets. • Make tidal calendars for any sea location. • Showing solar and lunar eclipses when they occur. • DEMO version, maps gets hazy after a minute. • Buy the full version for eternal sharpness or get a 5 days free trial first. • Designed to show optionally on a (big) external screen. Legend to the pictures: 1 the famous solar eclipse over Hawai`i in 1991, most people were clouded out; 2 lunar eclipse over America, showing timezones; 3 in the 1840's Manila was far in advance of GMT; 4 Sitka is still Russian in the morning; 5 same day (Gregorian) yet a day later it is America, also showing a multitude of timezones at that epoche; 6 skyview; 7 tides (bluish:low, yellowish:high) and tidesview
Screenshots
Verdict
The clearest difference is rating: 3D Solar System at 4.4 against Under the sun's 2.3. 3D Solar System also leads on review sentiment (29% vs 0%) and ratings volume (1.7K vs 3). Under the sun's advantage is ads (none vs shown) and device support (5 vs 2). On price, in-app purchases, monetization model and iOS requirement 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. 3D Solar System sells 12 in-app purchases, starting at $7.99 per 7 days and Under the sun sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
3D Solar System holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: 3D Solar System has 1.7K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 29% of 3D Solar System's written reviews are positive against 0% of Under the sun's.
3D Solar System ships an update fortnightly, Under the sun every 3 months. Both last shipped on October 24, 2026.
| Parameter | 3D Solar System | Under the sun |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.7K ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 28.8% of reviews — better | 0.0% of reviews |
| Number of ratings | 1.7K — better | 3 |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac, Apple TV — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 351 MB | 145 MB |
| Age rating | 4+ | 4+ |
| Developer | Education Terra | Tau'olunga komipiuta |
Customer experience
3D Solar System
Under the sun
Bugs and requests
3D Solar System
Reported bugs
3 issues- Planets displayed incorrectly
- Subscription charges without consent
- Inability to cancel subscription
Requested features
4 requests- More free content and features
- Realistic planet models and animations
- Expanded content beyond the solar system
- Improved accessibility and usability
Under the sun
Not enough reviews yet to summarise bugs or requests.
In-app purchases
3D Solar System
- 1 Week Subscription$7.997 Days
- 1 Month PRO3 Days trial$9.991 Month
- 1 month Sale2 Months trial$10.991 Month
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- 12 months sale3 Days trial$14.991 Year
- 6 months$19.996 Months
- Astronomy guide - Sky atlas$19.991 Month
- 12 months3 Days trial$29.991 Year
- Astronomy guide - Sky atlas3 Days trial$29.993 Months
- 2 Month Subscription3 Days trial$39.992 Months
- 2 Months Subscription3 Days trial$39.992 Months
- Disable Ads Sale$9.99
- Disable Ads$19.99
Under the sun
- 5 days tryoutFree
- Keep the map sharp$6.99
Questions
Is 3D Solar System free?
Is Under the sun free?
Which has better reviews, 3D Solar System or Under the sun?
Do 3D Solar System or Under the sun have ads?
Which is updated more often, 3D Solar System or Under the sun?
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