Planetary Clock vs Univerzoom 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planetary Clock
Visualize the precise positions of all planets in the Solar System for any given day. It uses accurate NASA data for orbital calculations and relative planet sizing, offering a clear, educational view of celestial mechanics.
- Real-time planet positions
- Accurate orbital calculations
- Uses NASA data
- Relative planet sizing
- Educational solar system view
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Planetary Clock is simple and elegant app what shows positions of all planets of the Solar System at any given day. The app uses precise calculation to determine accurate positions in real time. Sun’s and planets sizes are not to scale in order to show them clearly, but other parameters such as size of orbit, eccentricity, shape of the orbit and position of planets are calculated using precise NASA data. Planets are also realistically sized to each other
Univerzoom 3D
Explore the vastness of the universe and the intricacies of the microcosmos with intuitive touch controls. Compare celestial bodies, everyday objects, and subatomic particles to grasp their true scale. Discover fascinating facts and learn about the cosmos and beyond.
- Intuitive gesture-based scaling
- Explore universe to atomic levels
- Compare sizes of diverse objects
- Learn facts about celestial bodies
- Text-to-Speech for facts
- External resource links
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This app gives you the superpower to scale the entire universe with a swipe of your fingers! Zoom out faster than light and see the cosmos from a whole new perspective. Compare the biggest objects to the tiniest and get a true sense of size. ZOOM • Control the scale with simple gestures • Zoom out billions of light years to the edge of the visible universe • Zoom in to microscopic dimensions, down to atoms and beyond • Easy for anyone to use — from kids to grandparents DISCOVER • Explore the scale of the universe and the microcosmos • Compare stars, planets, rockets, telescopes, animals, and everyday objects • Understand how our Sun measures up to other stars LEARN • Find stunning facts about selected objects, or let them be read aloud via Text-to-Speech • Access trusted external sources for deeper exploration • Perfect for curious minds, students, and science fans Download now and experience the universe like never before!
Screenshots
Verdict
Planetary Clock and Univerzoom 3D both sit at 4.9 stars, but that hides the real split: 97% of Univerzoom 3D's written reviews are positive against 57% of Planetary Clock's. Univerzoom 3D also leads on update cadence (monthly vs every 27 months) and ratings volume (288 vs 34). Planetary Clock's advantage is price ($0.99 vs $2.99) and iOS requirement (11.4 vs 13.0). On rating, ads, 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
Planetary Clock costs $0.99 and Univerzoom 3D $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Planetary Clock against 4.8 for Univerzoom 3D. That said, the two scores are not equally well evidenced: Univerzoom 3D has 288 ratings behind it against 34, so its average is the more settled of the two. Written reviews are what separate them: 57% of Planetary Clock's written reviews are positive against 97% of Univerzoom 3D's.
Planetary Clock ships an update every 27 months, Univerzoom 3D monthly. The most recent releases landed on August 19, 2026 and September 27, 2026 respectively.
| Parameter | Planetary Clock | Univerzoom 3D |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.9 (34 ratings) — better | 4.8 (288 ratings) |
| Positive reviews | 57.1% of reviews | 97.3% of reviews — better |
| Number of ratings | 34 | 288 — better |
| Update frequency | Every 27 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.4 — better | 13.0 |
| Further details — not scored | ||
| Size | 14 MB | 247 MB |
| Age rating | 4+ | 4+ |
| Developer | Piotr Knapczyk | Linda Schnetzinger |
Customer experience
Planetary Clock
Univerzoom 3D
In-app purchases
Planetary Clock
No in-app purchases
Univerzoom 3D
No in-app purchases
Questions
Is Planetary Clock free?
Is Univerzoom 3D free?
Which has better reviews, Planetary Clock or Univerzoom 3D?
Do Planetary Clock or Univerzoom 3D have ads?
Which is updated more often, Planetary Clock or Univerzoom 3D?
Other comparisons
