Koi Feeder vs Magic Fluid Sand
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Koi Feeder
Interact with digital koi by feeding them. Enjoy a simple, relaxing experience designed to be played with.
- Feed digital koi
- Interact with koi
- Relaxing gameplay
- Simple interface
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The application which gives food to koi. Won't you play with koi?
Magic Fluid Sand
Experience a unique blend of classic Tetris and 2048 gameplay with relaxing fluid sand simulations. Enjoy synthesized music and inspiring quotes for a calming and visually engaging experience.
- Fluid sand simulation
- Classic Tetris gameplay
- 2048 puzzle game
- Synthesized background music
- Inspiring life quotes
- Interactive sand control
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Natural rhythms soothe your mind. Enjoy stunning fluid sand effects with ever-changing visuals for total relaxation. Play classic puzzle games: 2048, Block Puzzle, Minesweeper, Snake and Number Sliding Puzzle. Random notes create unique melodies every time. Enjoy relaxing pure music, natural sounds and classical piano pieces. Toggle background music freely, tap and control flowing sand particles. Vivid visuals inspire your thoughts. Read wise quotes in your spare time and gain insights into life while having fun.
Screenshots
Verdict
The clearest difference is review sentiment: Koi Feeder at 100% against Magic Fluid Sand's 0%. Koi Feeder also leads on rating (3.0 vs 1.0). Magic Fluid Sand's advantage is update cadence (monthly vs every 19 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Koi Feeder holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Koi Feeder's written reviews are positive against 0% of Magic Fluid Sand's.
Koi Feeder ships an update every 19 months, Magic Fluid Sand monthly. The most recent releases landed on June 5, 2026 and August 23, 2026 respectively.
| Parameter | Koi Feeder | Magic Fluid Sand |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 19 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12 |
| Further details — not scored | ||
| Size | 67 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | kume toru | 立辉 韩 |
Customer experience
Koi Feeder
Magic Fluid Sand
In-app purchases
Koi Feeder
No in-app purchases
Magic Fluid Sand
No in-app purchases
