Comparison

Planet Sylvia vs Nihongo Explorer

Price, ratings, monetisation and update history for both games, side by side โ€” with what reviewers say about each.

Head to head
About

Planet Sylvia

Embark on a cosmic adventure to colonize planets, build bases, and upgrade your spacecraft. Explore a vast universe, gather resources, and uncover the secrets of uncharted worlds.

Highlights
  • Establish bases on uncharted worlds
  • Gather and manage resources
  • Upgrade and customize spacecraft
  • Unlock and customize specialized ships
  • Explore unique planets and their mysteries
  • Develop adaptive strategies for diverse environments
Features
Read full description

Blast off into a universe of wonder with Planet Sylvia, where space exploration and base building meet in an epic adventure! As a visionary space pioneer, you are tasked with the exhilarating mission to colonize the cosmos. Establish bases on mysterious planets, enhance your rockets for deep space travel, and uncover the hidden secrets of the universe one celestial body at a time. Construct and Expand: Found Bases: Initiate your cosmic conquest by establishing outposts on uncharted worlds. Expand your reach across the galaxy as you unlock new territories and resources. Resource Mastery: Efficiently gather and manage resources to power your expansions and technological advancements, ensuring your survival in the vastness of space. Rocket Evolution: Custom Rocketry: Upgrade and customize your spacecraft with state-of-the-art technology. Tailor your vessel for various exploration needs, from speed to cargo capacity. Tech Breakthroughs: Propel your journey forward with breakthroughs in space technology, enhancing your bases and vessels for the ultimate spacefaring experience. Unravel the Mysteries: Infinite Exploration: The universe is your playground, filled with unique planets each harboring their own mysteries and challenges. Adaptive Strategies: Tackle diverse planetary environments and overcome the challenges they present to thrive in the unknown. Fleet Diversity: Unlockable Ships: Assemble a fleet of specialized ships, each offering unique features and capabilities. Customize your fleet to suit your exploration style and the challenges you face. Tailored Expeditions: Choose the right ship for each mission, whether it's a quick scouting trip or a major resource-gathering expedition.

About

Nihongo Explorer

Read full description

NihongoExplorer โ€“ Learn Japanese by Voice! Step into the dungeon of Japanese learning! With NihongoExplorer, you donโ€™t just memorize wordsโ€”you speak them to advance through the game. Perfect for learners who want to practice Hiragana, Katakana, JLPT N5 & N4 Kanji, and sharpen their Japanese pronunciation. ---How it works--- -Explore dungeons filled with Japanese challenges. -Use voice input: pronounce the word correctly to clear obstacles. -Learn step by step: Hiragana โ†’ Katakana โ†’ Kanji (N5 & N4). -Fun and interactive: it feels like a game, but youโ€™re mastering real Japanese! ---Features--- -Voice recognition practice for accurate pronunciation. -Covers essential beginner to lower-intermediate vocabulary. -Engaging RPG-style dungeon adventure. -Great for JLPT preparation (N5 & N4). -Suitable for self-learners, students, and anyone who wants to improve their spoken Japanese. ---Who is it for?--- -Beginners learning Hiragana and Katakana. -Learners studying basic Kanji (JLPT N5 & N4). -Anyone wanting to practice Japanese pronunciation in a fun, interactive way. Start your adventure today and level up your Japanese with NihongoExplorer!

Screenshots

Planet Sylvia4 screens
Nihongo Explorer4 screens

Verdict

The call

The clearest difference is in-app purchases: Nihongo Explorer at none against Planet Sylvia's 6. Nihongo Explorer also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Planet Sylvia sells 6 one-off in-app purchases. Nihongo Explorer asks for nothing beyond the download.

UpkeepUpdate frequency

Planet Sylvia ships an update every 3 days, Nihongo Explorer every 4 days. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard2 real differences ยท 6 level
Planet Sylvia versus Nihongo Explorer: the parameters behind the verdict, then further details
ParameterPlanet SylviaNihongo Explorer
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 3 days โ€” betterEvery 4 days
AdsYesYes
In-app purchasesYesNo โ€” better
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 โ€” better
Further details โ€” not scored
Size514 MB771 MB
Age rating4+4+
DeveloperAli YUCEKEI NAGASE

In-app purchases

6 purchases

Planet Sylvia

One-time6
  • Diamond Pack 1$0.99
  • Diamond Pack 2$3.99
  • Promo Pack$4.99
Show 3 more
  • Diamond Pack 3$9.99
  • Diamond Pack 4$19.99
  • Diamond Pack 5$39.99
None

Nihongo Explorer

No in-app purchases

Questions

Is Planet Sylvia free?
Planet Sylvia is free to download, with in-app purchases available.
Is Nihongo Explorer free?
Nihongo Explorer is free to download, with no in-app purchases.
Do Planet Sylvia or Nihongo Explorer have ads?
Both Planet Sylvia and Nihongo Explorer show ads.
Which is updated more often, Planet Sylvia or Nihongo Explorer?
Planet Sylvia ships an update every 3 days, and Nihongo Explorer every 4 days. Most recently, Planet Sylvia was updated on October 17, 2026 and Nihongo Explorer on October 7, 2026.

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