Comparison

Aquariumulator vs Marunomi

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

Head to head
About

Aquariumulator

Features
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Welcome, aquarium director! Aquariumulator is a cozy, pixel-art management sim where you build your very own aquarium from the ground up. Welcome marine favorites โ€” from clownfish and dolphins to orcas and the mighty whale shark โ€” display them in your tanks, and draw in crowds of visitors. Manage water quality and temperature, invest in facilities, and use the changing seasons to your advantage as you grow the greatest aquarium in the world. โ–  Collect Marine Life 155 species to discover. Pull the gacha, place your creatures in tanks, and watch the crowds grow with each tank's appeal. Duplicates can be sold for a price based on their rarity, and filling in more of the catalog earns you collection rewards. โ–  Run Your Aquarium Tanks work on a rental contract: pay an upfront fee, then juggle the daily rent as you expand. Choose from basic tanks, coral reefs, the deep sea, the open ocean, a jellyfish hall, and more. Climb the ranks to lease even more tanks. โ–  Build Facilities Expand a tank to raise its creature and visitor capacity, install filters to slow water decay, and hire a keeper to handle water changes and refill feed for you โ€” so you can spend more time simply watching the fish. โ–  Manage Water & Temperature Leave the water alone and it turns murky โ€” keep it clean with regular water changes. Each tank also prefers a certain water temperature, so matching it to the season is the key to a thriving aquarium. โ–  Read the Business Report Today's income and expenses, recent trends, each tank's contribution, a satisfaction breakdown, and your progress toward the next rank โ€” all in one place, so you can plan your next move. โ–  Enjoy the Seasons Spring, summer, autumn, and winter cycle through. Different creatures and tanks shine each season, and visitor numbers shift too. Watch for limited-time seasonal events! โ–  Combos & Decorations Pair compatible creatures and decorations to trigger combo bonuses! Decorate your tanks with over 110 decorations to bring out their full charm. โ–  Missions & Ranking Tackle a huge variety of missions and daily missions. Your aquarium climbs through ranks as your all-time visitor count grows, earning prize money at every rank-up and unlocking new tanks and visitors. Over 50 quirky visitor types are waiting to be discovered. With gentle pixel art and a bright, friendly look, Aquariumulator is easy to pick up and wonderfully easy to sink into. Start building your dream aquarium today!

About

Marunomi

Features
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A surreal idle creature-raising game where a deadpan fish gulps down prey and evolves into weird, creepy-cute forms. HOW TO PLAY - Tap a prey fish, your fish dashes and swallows it whole - The more it eats, the more it evolves into bizarre new shapes - Evolutions are random - you'll keep playing to see the next weird form FEATURES - A "Dex" of 15+ evolution forms to collect - Hidden evolutions (night-only, gold-drenched, and more) - A deadpan hero who mutters quirky one-liners - 12 endings - it gets oddly touching at the end - Idle-friendly: prey gathers while you're away. Great one-handed game * Don't worry - the fish that get eaten are actually alive and well, living happily in another tank. Cute, yet a little unsettling. You'll laugh, then feel something. Raise a weird little fish in your spare moments.

Screenshots

Aquariumulator4 screens
Marunomi4 screens

Verdict

The call

The clearest difference is in-app purchases: Marunomi at none against Aquariumulator's 3. Aquariumulator's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 weeks). On price 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. Aquariumulator sells 3 one-off in-app purchases. Marunomi asks for nothing beyond the download.

UpkeepUpdate frequency

Aquariumulator ships an update every 3 days, Marunomi every 6 weeks. Both last shipped on October 24, 2026.

Scorecard4 real differences ยท 2 level
Aquariumulator versus Marunomi: the parameters behind the verdict, then further details
ParameterAquariumulatorMarunomi
PriceFreeFree
Update frequencyEvery 3 days โ€” betterEvery 6 weeks
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better26.0
Further details โ€” not scored
Size53 MB106 MB
Age rating4+4+
DeveloperGen TakagakiRyutaro Nakano

In-app purchases

3 purchases

Aquariumulator

One-time3
  • ใƒ—ใƒฌใƒŸใ‚ขใƒ ใ‚ฌใƒใƒฃ(1ๅ›ž)$0.99
  • ๅบƒๅ‘Š็„กๅŠนๅŒ–$2.99
  • ใƒ—ใƒฌใƒŸใ‚ขใƒ ใ‚ฌใƒใƒฃ(10ๅ›ž)$9.99
None

Marunomi

No in-app purchases

Questions

Is Aquariumulator free?
Aquariumulator is free to download, with in-app purchases available.
Is Marunomi free?
Marunomi is free to download, with no in-app purchases.
Do Aquariumulator or Marunomi have ads?
Marunomi shows ads; Aquariumulator does not.
Which is updated more often, Aquariumulator or Marunomi?
Aquariumulator ships an update every 3 days, and Marunomi every 6 weeks. Most recently, Aquariumulator was updated on October 24, 2026 and Marunomi on October 24, 2026.

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