3D Solar System vs Daff Moon
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
Daff Moon
Track celestial movements with detailed information on moon phases, sunrise/sunset times, and the sun and moon's positions. Explore an interactive sky sphere for real-time celestial views and learn about twilight and golden hour.
- Current Moon Phase tracking
- Moon Phases Calendar
- Sunrise & Sunset Times
- Moonrise & Moonset times
- Day & Night Duration
- Interactive Sky Sphere
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Daff Moon — Your Personal Astronomical Companion Explore the sky like never before with Moon & Sun tracker, an astronomical app that helps you stay connected with the movements of the Moon and the Sun. Whether you’re an amateur astronomer, or simply curious about the night sky, this app gives you accurate and detailed information about celestial events and daily cycles. Main Features: - Current Moon Phase: See today’s phase of the Moon. - Moon Phases Calendar: Browse phases for any day, month, or year — past or future. - Sunrise & Sunset Times: Get precise information about sunrise, sunset, and twilight times for your location. - Moonrise & Moonset: Know exactly when the Moon appears and disappears from the sky. - Day & Night Duration: Track how the length of day and night changes throughout the year. - Sun and Moon Coordinates: View current azimuth, altitude, and declination — or check coordinates for any selected date. - Interactive Sky Sphere: A simple, intuitive sky view shows the real-time positions of the Sun, Moon and major planets relative to you. - Information about twilight, blue and golden hour. - Supermoons - Altitude charts of the Moon, the Sun and the planets - Day length chart during the year The app is under continuous development — new features and refinements are added regularly to make your stargazing experience even more accurate and enjoyable.
Screenshots
Verdict
The clearest difference is review sentiment: Daff Moon at 100% against 3D Solar System's 29%. Daff Moon also leads on rating (4.9 vs 4.4). 3D Solar System's advantage is ratings volume (1.7K vs 19). On price, update cadence, 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
Both are free to download. 3D Solar System sells 12 in-app purchases, starting at $7.99 per 7 days and Daff Moon sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Daff Moon holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: 3D Solar System has 1.7K ratings behind it against 19, 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 100% of Daff Moon's.
3D Solar System ships an update fortnightly, Daff Moon every 2 weeks. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.
| Parameter | 3D Solar System | Daff Moon |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (1.7K ratings) | 4.9 (19 ratings) — better |
| Positive reviews | 28.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.7K — better | 19 |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 352 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Education Terra | Evgenii Fedorishchenko |
Customer experience
3D Solar System
Daff Moon
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
Daff Moon
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
Daff Moon
- Remove Ads$0.99
- App contribution$4.99









