# Zen Koi Classic vs Turtle Evolution

The clearest difference is update cadence: Turtle Evolution at every 6 weeks against Zen Koi Classic's every 3 months. Turtle Evolution also leads on ratings volume (9.9K vs 2.1K) and review sentiment (94% vs 86%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Zen Koi Classic sells 10 one-off in-app purchases and Turtle Evolution sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Zen Koi Classic against 4.8 for Turtle Evolution. Both are backed by a comparable volume of ratings — 2.1K and 9.9K respectively. Written reviews are what separate them: 86% of Zen Koi Classic's written reviews are positive against 94% of Turtle Evolution's.

Zen Koi Classic ships an update every 3 months, Turtle Evolution every 6 weeks. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Zen Koi Classic | Turtle Evolution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.1K ratings)](https://appshunter.io/ios/app/zen-koi-classic/id896575207/reviews) | **[4.8 (9.9K ratings)](https://appshunter.io/ios/app/turtle-evolution/id1187951410/reviews)** |
| Number of ratings | 2.1K | **9.9K** |
| Positive reviews | 85.6% of reviews | **93.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 128 MB | 153 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [LandShark Games Pte. Ltd.](https://appshunter.io/developer/635142101) | [TPG TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/444343830) |

## What reviewers say

### Zen Koi Classic

[App page](https://appshunter.io/ios/app/zen-koi-classic/id896575207)

Nurture and collect vibrant Koi fish in a serene underwater world. Watch them grow, evolve into majestic dragons, and discover hundreds of unique varieties. Share your collection with friends and enjoy a calming, visually stunning experience.

**Highlights:** Breed and collect hundreds of unique Koi varieties, Watch Koi evolve into majestic dragons, Soothing music and mesmerizing visuals, Intuitive single-touch controls, Share and gift Koi with friends, Limited edition rewards for collectors

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $1.99 | one-time |
| Small Handful of pearls | $1.99 | one-time |
| Handful of pearls | $4.99 | one-time |
| Hasu Pack | $4.99 | one-time |
| Bag of pearls | $9.99 | one-time |
| Tenshi Pack | $9.99 | one-time |
| Splatto Pack | $9.99 | one-time |
| Yajiri Pack | $9.99 | one-time |
| Monkī Pack | $19.99 | one-time |
| Nami Pack | $19.99 | one-time |

**What reviewers like**

- 🌊 Relaxing and calming gameplay
- 🎨 Beautiful and intricate koi designs
- 🐉 Enjoyment of breeding and evolving koi into dragons
- 🕰️ Great way to pass time and de-stress
- 🎶 Soothing and pleasant background music

**What reviewers complain about**

- 💰 Difficulty earning pearls without in-app purchases
- 🔒 Limited number of koi/egg slots without spending pearls
- 🐛 Occasional crashes and bugs after updates
- 🆕 Concerns about losing progress after updates
- 📺 Disruptive full-screen ads

**Reported bugs**

- Koi and dragon progress lost after updates
- Inconsistent koi movement and speed issues
- Ads causing frequent crashes or freezes

**Requested features**

- Ability to play as or interact with dragons
- More koi slots or alternative ways to expand pond
- Easier ways to earn pearls without watching ads
- Ability to name or customize koi and dragons
- Zoom out feature to see full pond layout


### Turtle Evolution

[App page](https://appshunter.io/ios/app/turtle-evolution/id1187951410)

Merge and evolve various turtle species to discover new creatures. Earn in-game currency by collecting eggs or tapping turtles. Customize your turtles with hats and colors while navigating through different levels and avoiding impostors.

**Highlights:** Merge similar turtles to evolve, Discover new turtle species, Collect turtle eggs for coins, Tap turtles to lay eggs, Customize turtles with hats and colors, Avoid impostors

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Hard Currency Pack 1 | $1.99 | one-time |
| pack with diamonds | $1.99 | one-time |
| pack of rubies | $1.99 | one-time |
| instant coins doubler | $1.99 | one-time |
| Shop Bundle 1 | $2.99 | one-time |
| Hard Currency Pack 2 | $4.99 | one-time |
| big pack of rubies | $5.99 | one-time |
| income doubler | $5.99 | one-time |
| Shop Bundle 2 | $5.99 | one-time |
| Trinket | $6.99 | one-time |
| Hard Currency Pack 3 | $9.99 | one-time |
| starter bundle discount | $9.99 | one-time |

**What reviewers like**

- 🐢 Cute and fun turtles
- 👍 Enjoyable gameplay
- 💡 Ability to customize turtles
- 🚀 Addictive and engaging

**What reviewers complain about**

- 🐛 Disappearing turtle accessories
- 🔍 Difficulty progressing without ads
- 🔋 Slow crate drop rate

**Reported bugs**

- Glitches with turtle accessories
- Slow loading times
- Invisible ad close buttons

**Requested features**

- Ability to share coins/diamonds with friends
- More customization options
- Faster progression without ads
- Expanded game content


## Frequently asked questions

### Is Zen Koi Classic free?

Zen Koi Classic is free to download, with in-app purchases available.

### Is Turtle Evolution free?

Turtle Evolution is free to download, with in-app purchases available.

### Which has better reviews, Zen Koi Classic or Turtle Evolution?

Turtle Evolution is rated higher. Zen Koi Classic averages 4.7 out of 5 from 2.1K ratings, while Turtle Evolution averages 4.8 from 9.9K ratings.

### Do Zen Koi Classic or Turtle Evolution have ads?

Both Zen Koi Classic and Turtle Evolution show ads.

### Which is updated more often, Zen Koi Classic or Turtle Evolution?

Zen Koi Classic ships an update every 3 months, and Turtle Evolution every 6 weeks. Most recently, Zen Koi Classic was updated on October 13, 2026 and Turtle Evolution on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*