Magical Rays vs Koi Feeder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Magical Rays
Experience a calming and meditative light effect application. Touch the screen to interact with dynamic light rays and create ever-changing visual patterns for relaxation and zen healing.
- Interactive light ray attraction
- Dynamic and changing light patterns
- Zen and healing atmosphere
- Touch screen interaction
- Relaxing visual experience
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Relax zen healing. A light effect app provided by Digital Gene. When you touch the screen, you can attract the light ray. Please enjoy the ever-changing patterns of light ray.
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?
Screenshots
Verdict
The clearest difference is rating: Magical Rays at 4.6 against Koi Feeder's 3.0. Magical Rays also leads on ratings volume (206 vs 2) and update cadence (every 8 months vs every 19 months). Koi Feeder's advantage is review sentiment (100% vs 83%). On price, ads, in-app purchases and monetization model 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.
Magical Rays holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Magical Rays has 206 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 83% of Magical Rays's written reviews are positive against 100% of Koi Feeder's, so the app with the better star average is not the one people write more warmly about.
Magical Rays ships an update every 8 months, Koi Feeder every 19 months. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.
| Parameter | Magical Rays | Koi Feeder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (206 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 83.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 206 — better | 2 |
| Update frequency | Every 8 months — better | Every 19 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | Plus Inc. (Japan) | kume toru |
Customer experience
Magical Rays
Koi Feeder
Bugs and requests
Magical Rays
Reported bugs
4 issues- Ads are intrusive and cannot be removed
- Sound effects are unavoidable
- App quits unexpectedly when saving a photo
- Google ads banner is persistent and ruins the experience
Requested features
7 requests- Add option to slow down or speed up the game
- Add a color wheel for particle customization
- Add more music options
- Add option to change background color
- Add option to permanently remove ads
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- Add multi-finger interaction
- Add slo-mo button
Koi Feeder
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Magical Rays
No in-app purchases
Koi Feeder
No in-app purchases
