Sim Aquarium vs Rice Fish
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sim Aquarium
Design and manage your own 3D aquarium. Collect, feed, and breed fish, then decorate your underwater world with various items. Complete daily goals and play mini-games for rewards.
- Collect and breed fish
- Decorate 3D aquariums
- Feed and grow fish
- Complete daily goals
- Play mini-games
- Visit friends' aquariums
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Collect fish, care for them and decorate your own 3D aquarium. Turn an empty tank into an underwater home, one fish and one decoration at a time. YOUR AQUARIUM, YOUR WAY • Feed your fish and watch them grow. • Breed fish and expand your collection. • Choose backgrounds, coral, plants and decorations for your tank. • Complete daily goals and treasure orders, then collect rewards. • Play match-3 puzzles and other minigames for extra variety. • Visit friends’ aquariums and send gifts. Enjoy watching your fish swim, or return for a small daily goal. Whether you prefer collecting sea creatures or designing a reef, your aquarium gives you something to build on. Start with your first fish and make the tank your own. Support: hello.polybear@gmail.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Rice Fish
A virtual aquarium simulation where you care for Japanese rice fishes and aquatic plants. Interact with your fish, clean the tank, and watch your aquarium grow. Save your progress via iCloud and explore a 3D view with a companion app.
- Virtual aquarium simulation
- Feed and clean fish
- Interactive characters
- Aquarium customization
- iCloud data saving
- 3D VR view companion app
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Rice Fish is an aquarium app of Japanese rice fishes. Operations: Feeding: Tap water surface. Cleaning: Swipe dirty glass surface. Touch: Each character reacts your touch. You can change layout of your aquarium by pushing root of weeds. Menu: Long tap and help menu will appear. Growing: Characters will grow if you do cleaning/feeding once or twice a day. Characters: There are 4 kinds of characters. Rice Fish: Do both cleaning and feeding. Weed: Do only cleaning. Grow by touching. Snail: Does not do cleaning. This app saves play data to iCloud every two minutes. You can download play data when you install this app to new device. You can also view your own aquarium in 3D by "Rice Fish VR" app.
Screenshots
Verdict
The clearest difference is in-app purchases: Rice Fish at none against Sim Aquarium's 10. Rice Fish also leads on rating (4.4 vs 4.1) and iOS requirement (12.0 vs 15.0). Sim Aquarium's advantage is update cadence (every 11 days vs every 4 months) and review sentiment (79% vs 67%). On price, ratings volume, ads 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. Sim Aquarium sells 10 one-off in-app purchases. Rice Fish asks for nothing beyond the download.
Rice Fish holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 17 and 14 respectively. Written reviews complicate that: 79% of Sim Aquarium's written reviews are positive against 67% of Rice Fish's, so the app with the better star average is not the one people write more warmly about.
Sim Aquarium ships an update every 11 days, Rice Fish every 4 months. The most recent releases landed on November 11, 2026 and November 2, 2026 respectively.
| Parameter | Sim Aquarium | Rice Fish |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (17 ratings) | 4.4 (14 ratings) — better |
| Positive reviews | 78.9% of reviews — better | 66.7% of reviews |
| Number of ratings | 17 — better | 14 |
| Update frequency | Every 11 days — better | Every 4 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 299 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | 达 雷 | KENSHI DOI |
Customer experience
Sim Aquarium
Rice Fish
Bugs and requests
Sim Aquarium
Reported bugs
8 issues- Game crashes frequently
- Game refuses to open or load
- Purchased items not received
- Game frozen
- Missing gems/rewards
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- Tanks disappeared
- Snowing effect bug
- Ads pop up during tutorial
Requested features
9 requests- More levels
- More fish breeds and decorations
- More challenges
- Option to remove ads
- Ability to email/message developers
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- Confirmation for purchases
- New fish species like turtles, sharks, etc.
- Faster evolution of fish/tank
- Ability to turn off snow effect
Rice Fish
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sim Aquarium
- Pile of Gems$1.99
- Mound of Gems$4.99
- Aquarium Special Pack$4.99
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- Bag of Gems$9.99
- Rare Crab Breeding Pack$9.99
- Sack of Gems$19.99
- Super Aquarium Pack$19.99
- Basket of Gems$29.99
- Box of Gems$49.99
- Chest of Gems$99.99
Rice Fish
No in-app purchases









