Comparison

Solar System&Celestial Objects vs Deeper | Ocean Explorer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Solar System&Celestial Objects

Features
Read full description

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

About

Deeper | Ocean Explorer

Embark on an interactive journey to explore the ocean's hidden depths, from the sunlit surface to the darkest trenches. Discover unique marine life, understand extreme environments, and learn about fascinating deep-sea phenomena. Test your knowledge with engaging quizzes.

Highlights
  • Explore ocean depth zones
  • Discover marine life species
  • Understand deep-sea phenomena
  • Learn about ocean processes
  • Interactive quizzes
  • Visual and engaging learning
Features
Read full description

Dive deeper into the ocean with Deeper, an interactive journey through the hidden world beneath the surface. The ocean covers most of our planet, yet much of its depths remain unexplored. As sunlight fades and pressure increases, an entirely different world begins to emerge—filled with extraordinary creatures, extreme environments, fascinating natural processes, and life forms unlike anything found on land. Deeper helps you explore this world layer by layer, from the sunlit surface to the darkest and deepest parts of the ocean. EXPLORE THE OCEAN Journey through the major ocean depth zones and discover how conditions change as you descend. Learn about the Surface, Twilight Zone, Midnight Zone, Abyssal Zone, and Hadal Zone, and see how light, temperature, pressure, and life transform throughout the descent. DISCOVER MARINE LIFE Meet remarkable creatures adapted to life in the deep. Explore species such as viperfish, black dragonfish, gulper eels, hatchetfish, tripod fish, rattail fish, deep-sea corals, sea cucumbers, sponges, sea stars, and many more. Each species reveals a different strategy for surviving in one of Earth's most extreme environments. UNDERSTAND THE DEEP SEA The deep ocean is more than darkness and unusual animals. Explore the natural processes and phenomena that shape life beneath the surface, including: • Bioluminescence and counter-illumination • Diel vertical migration • The deep scattering layer • Internal waves • Deep ocean currents • Ocean carbon and the biological carbon pump • Cold seeps and seamounts • Deep-sea canyons and ocean trenches • The deep ocean soundscape • Red light and the red-light window • The effects of extreme pressure • Carbon storage in the abyss GO DEEPER Follow the transition from the familiar surface world into environments where sunlight disappears, pressure becomes extreme, and organisms have evolved extraordinary adaptations. Discover why some animals produce their own light, how others become nearly invisible, how marine life survives crushing pressure, and how the deep ocean plays a vital role in Earth's climate and carbon cycle. LEARN THROUGH DISCOVERY Deeper is designed to make ocean science approachable, visual, and engaging. Explore topics at your own pace, discover fascinating facts, and build a better understanding of the interconnected systems that make the deep ocean possible. TEST YOUR KNOWLEDGE Think you know the ocean? Put your knowledge to the test with interactive quizzes and see how much you remember about the creatures, environments, and phenomena you've discovered. FROM THE SURFACE TO THE TRENCHES There is an entire world beneath the waves. Descend through the ocean's layers. Discover the creatures that live there. Understand the forces that shape their environment. The deeper you go, the stranger it gets. Explore the ocean. Discover the deep. Go Deeper.

Screenshots

Solar System&Celestial Objects4 screens
Deeper | Ocean Explorer4 screens

Verdict

The call

The clearest difference is in-app purchases: Solar System&Celestial Objects at none against Deeper | Ocean Explorer's 1. Solar System&Celestial Objects also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). Deeper | Ocean Explorer's advantage is ads (none vs shown). On price and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Deeper | Ocean Explorer sells 1 one-off in-app purchase. Solar System&Celestial Objects asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 5 level
Solar System&Celestial Objects versus Deeper | Ocean Explorer: the parameters behind the verdict, then further details
ParameterSolar System&Celestial ObjectsDeeper | Ocean Explorer
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 6 weeksEvery 6 weeks
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better16.4
Further details — not scored
Size62 MB54 MB
Age rating4+4+
DeveloperNIKI TECHAta Guneser

In-app purchases

None

Solar System&Celestial Objects

No in-app purchases

1 purchases

Deeper | Ocean Explorer

One-time1
  • Deeper Premium$0.99

Questions

Is Solar System&Celestial Objects free?
Solar System&Celestial Objects is free to download, with no in-app purchases.
Is Deeper | Ocean Explorer free?
Deeper | Ocean Explorer is free to download, with in-app purchases available.
Do Solar System&Celestial Objects or Deeper | Ocean Explorer have ads?
Solar System&Celestial Objects shows ads; Deeper | Ocean Explorer does not.
Which is updated more often, Solar System&Celestial Objects or Deeper | Ocean Explorer?
Solar System&Celestial Objects ships an update every 6 weeks, and Deeper | Ocean Explorer every 6 weeks. Most recently, Solar System&Celestial Objects was updated on October 25, 2026 and Deeper | Ocean Explorer on October 29, 2026.

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