Comparison

My Koi vs Sync

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

Head to head
About

My Koi

Create and nurture your own virtual koi pond. Customize fish, environments, and watch them grow. This relaxing app offers a serene escape with beautiful graphics and calming sounds.

Highlights
  • Customize fish scales and patterns
  • Manage multiple ponds and fish
  • Decorate pond environment
  • Unlock new fish varieties
  • Track fish growth and happiness
  • Experience changing time of day
  • Enjoy ambient soundscapes
Features
Read full description

My Koi, number 1 hit on the Mac App Store (Games), is a beautiful and relaxing fish pond app. Customise and name each fish. Feed them daily. Watch them grow. Collect new fish. Escape and relax. COLLECT. GROW. NURTURE. ESCAPE. ********* "Love it love it love it - I can't keep my self from checking on them every 3 to 4 hours ... This relaxes me at work." 5 stars. - Raulito1991, USA "This was truly my best purchase on the AppStore so far, amazing graphics and gameplay and brilliant for helping me relax" 5 stars - Joes826482, UK "The best game ever!!!! - I went into the App Store a few days ago looking for a old koi game I used to play. I instead ended with this and I love it! Worth every cent, this game is so fun. " 5 Stars. - Blenore, USA "This app is so beautiful. I love relaxing and watching my koi. I feel like I have koi without all the upkeep. This has quickly become my favorite app!!!" 5 stars.- Jamelith, USA "First of all you don’t deserve 5 stars you deserve more because this game is just amazing thank you for an amazing game that so life like keep up the good work" - 5 stars. Florida 696, USA " If you are seeking out a serene experience, then look no further than My Koi". - Appaddict.net ********** With My Koi you can * Add up to 18 unique fish to each pond. Change their scales and patterns. No two fish are alike so everyone's experience will be different * Multiple ponds so you can collect more fish. Manage up to 54 fish across 3 ponds. * Customise the pond environment including rocks, plants, substrate and water colour * Unlock more fish slots and new varieties once milestones have been reached * View and track each fish underwater * Feed your fish and watch them swim to food * See your fish grow over time and see their growth stats * Name each fish * Tap them and watch them swim away * View fish happiness levels which will change depending on how much they are fed * The time of day will change as you play effecting sound and light * Enjoy ambient mode (with just the sounds) * Bring the pond to your lounge room via AirPlay and Apple TV * Enjoy the calming atmosphere and beauty of your own private koi pond whilst listening to the relaxing sounds of nature So, download My Koi now to escape and relax with your own private underwater oasis. My Koi has no in-app purchases or advertising. Suitable Platforms: Any 64bit iOS device

About

Sync

Help Hercules reassemble the universe after a chaotic party with the gods. This mind-bending puzzle game challenges your body and mind with unique mechanics set in a '70s Olympus.

Highlights
  • Mind and body bending puzzles
  • Universe reassembly gameplay
  • '70s Olympus setting
  • Unique puzzle mechanics
  • Story-driven challenges
Read full description

"Game of the Day" in 140+ countries! "Best Innovative Game" at Kristal Piksel '20! Winner of "The Best Indie Game" at GIST '19! "Excellence in Innovation" & "Excellence in Audio" at 4th IMGA MENA Finalist of Casual Connect London '19 Hercules is messed up… Turns out throwing a party with gods while his parents are away and tearing the whole universe apart was not a great idea in the end. Only you can help him to put the universe back together before Zeus comes back! Grab your device and sit tight. Because this puzzle game is not like any other. These puzzles will bend your body as much as your mind. Here is your invitation to ‘70s Olympus to push the limits of your body and mind.

Screenshots

My Koi4 screens
Sync4 screens

Verdict

The call

The clearest difference is update cadence: Sync at every 5 weeks against My Koi's every 3 months. Sync also leads on price ($1.99 vs $2.99) and iOS requirement (12.0 vs 15.6). My Koi's advantage is ratings volume (218 vs 23). On rating, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

My Koi costs $2.99 and Sync $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for My Koi against 4.7 for Sync. That said, the two scores are not equally well evidenced: My Koi has 218 ratings behind it against 23, so its average is the more settled of the two. Written reviews split almost evenly too, at 95% and 95% positive.

UpkeepUpdate frequency

My Koi ships an update every 3 months, Sync every 5 weeks. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

Scorecard4 real differences · 6 level
My Koi versus Sync: the parameters behind the verdict, then further details
ParameterMy KoiSync
Price$2.99$1.99 — better
Rating4.9 (218 ratings) — better4.7 (23 ratings)
Positive reviews95.3% of reviews — better94.7% of reviews
Number of ratings218 — better23
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size142 MB109 MB
Age rating4+4+
DeveloperSakana StudiosSiis Bilisim Teknoloji Ticaret ve Pazarlama Ltd. Sti.

Customer experience

My Koi

All ratings218 ratings
Positive97.7%
Neutral0.5%
Negative1.8%
Written reviews193 reviews
Positive95.3%
Neutral2.1%
Negative2.6%

Sync

All ratings23 ratings
Positive95.7%
Neutral0.0%
Negative4.3%
Written reviews38 reviews
Positive94.7%
Neutral2.6%
Negative2.6%

Bugs and requests

My Koi

Reported bugs

2 issues
  • Fish getting stuck or unable to move
  • Inconsistent fish growth rates or weight issues

Requested features

5 requests
  • Breeding and baby fish mechanics
  • Ability to move fish between ponds
  • More diverse fish species (e.g., goldfish, butterfly koi)
  • Expanded pond decoration options (waterfalls, structures, etc.)
  • Multiplayer or social features to share ponds

Sync

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

My Koi

No in-app purchases

None

Sync

No in-app purchases

Questions

Is My Koi free?
My Koi costs $2.99, with no in-app purchases.
Is Sync free?
Sync costs $1.99, with no in-app purchases.
Which has better reviews, My Koi or Sync?
My Koi is rated higher. My Koi averages 4.9 out of 5 from 218 ratings, while Sync averages 4.7 from 23 ratings.
Do My Koi or Sync have ads?
Neither My Koi nor Sync shows ads.
Which is updated more often, My Koi or Sync?
My Koi ships an update every 3 months, and Sync every 5 weeks. Most recently, My Koi was updated on November 6, 2026 and Sync on November 2, 2026.

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