Solar System&Celestial Objects vs Solar System Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Solar System&Celestial Objects
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Easy learning about solar system, stars, celestial objects, constellations, spacecraft with pictures ,sounds and quiz games. If you who always search and learn a quiz app like these, this app is for you ① Solar system Flash card app. ② Stars Quiz app. ③ Celestial objects quiz app. ④ Stars history and information app. ⑤ Constellations name cards. ⑥ Guess solar system app. Features: - You can learn many kinds of stars. - You can play solar system quiz. - Many information related to solar system, stars, celestial objects, constellations, spacecraft - Support Quiz feature. - Support 5 languages: English, Japanese, Korean, Chinese, Vietnamese
Solar System Clock
Visualize the current or historical positions of planets in our solar system. Explore future or past planetary alignments and identify optimal times for observing planets in the night sky.
- Real-time planet positions
- Custom date selection
- Past and future alignments
- Optimal viewing time identification
- Solar System visualization
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See the positions of all planets in our Solar System based on the current date. Or, you can set your own custom date to see the alignment of our planets from a future date or a past date. You can use this app to find out the best time to watch a planet in the sky by finding out when it will be closest to Earth.
Screenshots
Verdict
The clearest difference is ads: Solar System Clock at none against Solar System&Celestial Objects's shown. Solar System Clock also leads on update cadence (every 2 days vs every 6 weeks). Solar System&Celestial Objects's advantage is iOS requirement (12.0 vs 16.6). On price, in-app purchases and device support 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.
Solar System&Celestial Objects ships an update every 6 weeks, Solar System Clock every 2 days. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.
| Parameter | Solar System&Celestial Objects | Solar System Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 62 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | NIKI TECH | Mateusz Andrzejczuk |
In-app purchases
Solar System&Celestial Objects
No in-app purchases
Solar System Clock
No in-app purchases
Questions
Is Solar System&Celestial Objects free?
Is Solar System Clock free?
Do Solar System&Celestial Objects or Solar System Clock have ads?
Which is updated more often, Solar System&Celestial Objects or Solar System Clock?
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