Comparison

KAMI vs Zerko

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

Head to head
About

KAMI

A beautiful and relaxing puzzle game where you fold colored paper to fill the screen. It offers a handcrafted Japanese aesthetic and a calming soundtrack. The game challenges you to solve puzzles in as few moves as possible.

Highlights
  • Fold colored paper to fill screen
  • Minimal move puzzles
  • Handcrafted Japanese aesthetic
  • 72 unique puzzles
  • Calming soundtrack
  • Relaxing gameplay
Features
Currently charting
Read full description

A beautiful and relaxing paper puzzle game. ***Editor's Choice*** Mac App Store # 1 Best New Game, Mac App Store # 1 iOS Puzzle Game in 12 countries # 1 Game Mac App Store US # 1 Game Mac App Store UK KAMI is deceptively simple: fold out coloured paper to fill the screen in as few moves as possible. "Beautiful aesthetics, soothing sounds and deceptively challenging puzzles" - Macworld "KAMI feels fresh and unique. This is a game that gives you space to breathe, never harrying with time limits or catastrophes" - PocketGamer "Highly polished... a unique art style that isn’t just for show, but actually enhances the gameplay" - Apple'N'Apps "Gloriously well-made...Stylishly challenging" - 148 Apps "Elevated by its top-notch production values and visual splendour" - AppSpy Relaxing and easy to pick up, you'll soon find yourself deep in contemplation to perfect each puzzle. Created by State of Play, famous for their handcrafted aesthetic, KAMI has been created with real paper in an elegant Japanese theme. KAMI is tactile, engaging and stunning to look at. ► 72 unique puzzles! 45 included plus 27 Premium Puzzles. ► Beautiful handcrafted Japanese look, created using real paper ► Calming and elegant soundtrack ► Created by State of Play, creators of the award-winning papercraft game 'Lume'

About

Zerko

A relaxing puzzle game where you strategically place blocks to make all numbers on the board equal zero. Enjoy a no-pressure experience with calming audio and no in-app purchases or ads.

Highlights
  • Zero-sum number puzzles
  • Strategic block placement
  • Relaxing gameplay
  • No time pressure
  • No in-app purchases
  • No ads
Features
Read full description

Some call it reverse sudoku, while others call it a nullification game, but it's Zerko - a puzzle game filled with shapes, numbers, and a straightforward goal: make every number zero. To achieve this, you need to strategically place blocks of various shapes and values so that the numbers on the board effectively "remove up" to zero. Like all my games, this one too is about relaxation... Just chill. There are no points, no time pressure, no data collection, no in-app purchases, no ads, no nonsense ;) My only hope is that you'll enjoy it and that I'll be able to add new content and levels for you in the future. Relaxing audio by: Marek Koszczyński

Screenshots

KAMI4 screens
Zerko4 screens

Verdict

The call

The clearest difference is in-app purchases: Zerko at none against KAMI's 6. Zerko also leads on review sentiment (93% vs 84%). KAMI's advantage is ratings volume (512 vs 14) and chart position (#175 vs unranked). On price, rating, update cadence 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

KAMI costs $2.99 and Zerko $2.99 up front. KAMI sells 6 one-off in-app purchases. Zerko asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for KAMI against 4.9 for Zerko. That said, the two scores are not equally well evidenced: KAMI has 512 ratings behind it against 14, so its average is the more settled of the two. Written reviews are what separate them: 84% of KAMI's written reviews are positive against 93% of Zerko's.

UpkeepUpdate frequency

KAMI ships an update fortnightly, Zerko every 3 weeks. The most recent releases landed on September 29, 2026 and September 11, 2026 respectively.

Scorecard6 real differences · 5 level
KAMI versus Zerko: the parameters behind the verdict, then further details
ParameterKAMIZerko
Price$2.99$2.99
Rating4.8 (512 ratings)4.9 (14 ratings) — better
Positive reviews83.8% of reviews93.3% of reviews — better
Number of ratings512 — better14
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#175 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better12.0
Further details — not scored
Size63 MB100 MB
Age rating4+4+
DeveloperState of Play GamesMaciej Targoni

Customer experience

KAMI

All ratings512 ratings
Positive97.1%
Neutral0.4%
Negative2.5%
Written reviews739 reviews
Positive83.8%
Neutral4.9%
Negative11.4%

Zerko

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive93.3%
Neutral6.7%
Negative0.0%

Bugs and requests

KAMI

Reported bugs

4 issues
  • Crashes on iOS 8.1.3 / iPhone 6 Plus
  • Bottom half of screen is black on iPad Air
  • Achievements not working properly
  • Saves and progress being lost

Requested features

5 requests
  • Add more free levels
  • Improve hint system
  • Add color blind mode
  • Sync progress across devices
  • Add more variety to puzzles

Zerko

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

KAMI

One-time6
  • Premium Pack: 5 Color Retro$0.99
  • Premium Pack: Noughts & Crosseyes$0.99
  • Pack of 5 Hint Credits$0.99
Show 3 more
  • Premium Pack: Convolution$0.99
  • Pack of 15 Hint Credits$1.99
  • Unlimited hints$3.99
None

Zerko

No in-app purchases

Questions

Is KAMI free?
KAMI costs $2.99, and also offers in-app purchases.
Is Zerko free?
Zerko costs $2.99, with no in-app purchases.
Which has better reviews, KAMI or Zerko?
Zerko is rated higher. KAMI averages 4.8 out of 5 from 512 ratings, while Zerko averages 4.9 from 14 ratings.
Do KAMI or Zerko have ads?
Neither KAMI nor Zerko shows ads.
Which is updated more often, KAMI or Zerko?
KAMI ships an update fortnightly, and Zerko every 3 weeks. Most recently, KAMI was updated on September 29, 2026 and Zerko on September 11, 2026.

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