Comparison

Zen Koi Classic vs Shark Evolution

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

Head to head
About

Zen Koi Classic

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
Read full description

Looking for a relaxing game? Dive into Tranquility: Unwind and Ascend with Zen Koi Classic (Free-to-Play) Embark on a captivating journey of transformation and serenity in Zen Koi Classic, the enchanting mobile game where you experience the vibrancy and breathtaking beauty of the graceful Koi. Immerse yourself in a calming atmosphere filled with soothing music and mesmerizing visuals as you nurture these magnificent fish, witnessing their growth and culminating metamorphosis into majestic dragons. Unwind and Ascend: A Timeless Tale Zen Koi Classic offers a unique experience that blends relaxation with strategic collection. Breed, collect and discover beautiful Koi: witness the captivating journey of your Koi as they evolve from tiny hatchlings into breathtaking creatures, each boasting unique colors and intricate patterns. Guide them through their life cycle, culminating in a stunning transformation that embodies the legend of the Koi's ascension into a dragon. Features: Free-to-Play: Enjoy the core gameplay experience without any purchase required. Soothing and Intuitive Gameplay: Immerse yourself in a world of tranquility with simple controls and a serene environment. Unique Flowing Action: Guide your Koi with a single touch, mimicking their graceful movements through the water. A Calming Oasis: Find peace in the beautiful aquatic environment, enhanced by soothing music and sound effects. Unveiling a Spectrum of Koi: Discover and collect hundreds of stunning Koi varieties, each boasting unique color combinations and patterns. Some rare specimens await the most dedicated collectors! Share Your Passion: Share and gift magnificent Koi you have bred and collected with friends and fellow players. Limited Edition Reward: Collect and complete all Koi and Dragon collections in Zen Koi Classic and claim unique decorations for your personal pond and aquarium in Zen Koi 2 as a special bonus! Unveiling the Depths of Zen Koi Classic: A Visual Symphony: Immerse yourself in an underwater world teeming with vibrant life with plenty of prey to catch. The Calming Symphony: Escape the daily grind with a serene soundtrack by Kiat from System Sovereign featuring gentle melodies and calming ambient sounds. Soundscapes are designed by IMBA to further enhance the sense of tranquility. The Emotional Connection: Witness the heartwarming growth and transformation of your Koi. Observe their vibrant colors and discover a progression of beautiful patterns, building a special bond with your pond companions. As they evolve into majestic dragons, experience a sense of accomplishment for nurturing them throughout their journey. Download Zen Koi Classic today and embark on a captivating odyssey of transformation and tranquility! Note: Zen Koi is free to download and play. However, optional items are available via In-App Purchase within the game to expand upon your gameplay experience. By downloading this game, you agree to our Terms of Service & Privacy Policy: http://www.landsharkgames.com/terms-of-service/ http://www.landsharkgames.com/privacy-policy/ Rated 3+ by the Indonesia Game Rating System (IGRS).

About

Shark Evolution

Combine and evolve various shark species to create new, scarier creatures. Tap to earn coins, unlock new species, and discover different endings in this incremental clicker game.

Highlights
  • Combine similar sharks to evolve
  • Discover new shark species
  • Earn coins by tapping sharks
  • Unlock new creatures with coins
  • Explore different game stages
  • Multiple possible endings
Features
Read full description

Feared by many, a force of nature, the obsession of way too many screenwriters in Hollywood… That’s right, you got it: SHARKS! Sharks are the lions of the sea – they’re regal, astute and, above all, carnivores. It might be those big bulging eyes or the lack of a silky mane, but they’re actually waaaay scarier than their terrestrial counterparts. This is why we decided that YES, the world needs a sharklicious version of the Evolution saga (maybe we just want to see the world BURN)! It’s a new wave of entertainment! Why settle for an ordinary shark? Sharks are scary by nature but with a little help of Shark Evolution they can get EXTRA scary and you can create and develop many fishy shark species, just combine them to see them evolve! Have a sea of fun mixing, matching and combining these villains of the water world! FEATURES • Pantheon: a new place for supreme beings to look down on us mortals and laugh at our misery • Impostors: watch out for impostors trying to steal the spotlight from the sharks HOW TO PLAY • Drag and drop similar sharks to create new mysterious creatures • Use sharks poop coins to buy new creatures and make even more money • Alternatively, fiercely tap a shark to make coins pop when sharks poop HIGHLIGHTS • Different stages and many shark species to discover • A mind-blowing story yet untold • The unexpected mix of alpaca-like evolution, 2048 and incremental clicker games • Doodle-like illustrations • Various possible endings: find your destiny • No sharks were harmed in the making of this game, only developers Bait the hook and download Shark Evolution now! Disclaimer: While this App is completely free to play, some additional content can be purchased for real money in-game. If you do not want to use this feature, please turn off in-app purchases in your device's settings. Like our page on Facebook and be the first to know about our upcoming games and updates! http://fb.com/tappshq

Screenshots

Zen Koi Classic4 screens
Shark Evolution4 screens

Verdict

The call

The clearest difference is update cadence: Shark Evolution at every 6 weeks against Zen Koi Classic's every 3 months. Shark Evolution also leads on ratings volume (7.1K vs 2.1K). Zen Koi Classic's advantage is iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Zen Koi Classic sells 10 one-off in-app purchases and Shark Evolution sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Zen Koi Classic against 4.8 for Shark Evolution. Both are backed by a comparable volume of ratings — 2.1K and 7.1K respectively. Written reviews are what separate them: 86% of Zen Koi Classic's written reviews are positive against 88% of Shark Evolution's.

UpkeepUpdate frequency

Zen Koi Classic ships an update every 3 months, Shark Evolution every 6 weeks. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

Scorecard3 real differences · 7 level
Zen Koi Classic versus Shark Evolution: the parameters behind the verdict, then further details
ParameterZen Koi ClassicShark Evolution
PriceFreeFree
Rating4.7 (2.1K ratings)4.8 (7.1K ratings) — better
Positive reviews85.9% of reviews88.1% of reviews — better
Number of ratings2.1K7.1K — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size125 MB158 MB
Age rating4+4+
DeveloperLandShark Games Pte. Ltd.TPG TECNOLOGIA DA INFORMACAO LTDA

Customer experience

Zen Koi Classic

All ratings2,054 ratings
Positive93.1%
Neutral3.8%
Negative3.1%
Written reviews382 reviews
Positive85.9%
Neutral7.3%
Negative6.8%

Shark Evolution

All ratings7,085 ratings
Positive94.8%
Neutral3.1%
Negative2.1%
Written reviews494 reviews
Positive88.1%
Neutral2.4%
Negative9.5%

User reviews

Zen Koi Classic

From 2.1K App Store ratings

What we love

  • 🌊 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

Room to improve

  • 💰 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

Shark Evolution

From 7.1K App Store ratings

What we love

  • 👍 Fun and addictive game
  • 🦈 Unique shark-themed evolution
  • 💗 Cute and creative shark designs
  • 🤩 Engaging gameplay loop
  • 🎨 Visually appealing underwater theme

Room to improve

  • 🤖 Frequent and intrusive ads
  • 🐛 Bugs and glitches (crashes, lost progress)
  • 💰 Expensive in-app purchases
  • 🕰️ Repetitive gameplay over time
  • 🤔 Questionable evolutionary logic

Bugs and requests

Zen Koi Classic

Reported bugs

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

Requested features

5 requests
  • 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

Shark Evolution

Reported bugs

4 issues
  • Game freezes or crashes
  • Offline earnings disappearing
  • Purchased hats/items not showing up
  • Compatibility issues on older devices

Requested features

5 requests
  • More shark evolution varieties
  • Offline progress saving
  • Reduced ad frequency
  • Improved performance and stability
  • Frog, dolphin, or other animal evolution games

In-app purchases

10 purchases

Zen Koi Classic

One-time10
  • Starter Pack$1.99
  • Small Handful of pearls$1.99
  • Handful of pearls$4.99
Show 7 more
  • Hasu Pack$4.99
  • Bag of pearls$9.99
  • Tenshi Pack$9.99
  • Splatto Pack$9.99
  • Yajiri Pack$9.99
  • Monkī Pack$19.99
  • Nami Pack$19.99
11 purchases

Shark Evolution

One-time11
  • ads removal$0.99
  • pack of rubies$1.99
  • instant coins doubler$1.99
Show 8 more
  • pack with some diamonds$1.99
  • pack of diamonds$1.99
  • pack with more diamonds$4.99
  • big pack of rubies$5.99
  • income doubler$5.99
  • Trinket$6.99
  • pack with plenty of diamonds$9.99
  • starter bundle with discount$9.99

Questions

Is Zen Koi Classic free?
Zen Koi Classic is free to download, with in-app purchases available.
Is Shark Evolution free?
Shark Evolution is free to download, with in-app purchases available.
Which has better reviews, Zen Koi Classic or Shark Evolution?
Shark Evolution is rated higher. Zen Koi Classic averages 4.7 out of 5 from 2.1K ratings, while Shark Evolution averages 4.8 from 7.1K ratings.
Do Zen Koi Classic or Shark Evolution have ads?
Both Zen Koi Classic and Shark Evolution show ads.
Which is updated more often, Zen Koi Classic or Shark Evolution?
Zen Koi Classic ships an update every 3 months, and Shark Evolution every 6 weeks. Most recently, Zen Koi Classic was updated on September 21, 2026 and Shark Evolution on September 24, 2026.

Other comparisons