Koikoi

Kouichi Hayashi · iOS

Koikoi

Explore the ad evidence, study the storefront, and build your next acquisition hypothesis.

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01 / Creative research

Turn the unknowns into a research plan.

01

Check the acquisition promise

Read the store headline, screenshots and description. What problem is the app promising to solve?

Study the storefront
02

Look for ad evidence

Explore apps with direct store-link matches. Compare their hooks and formats without assuming the same approach works here.

Browse observed advertisers
03

Separate demand from paid growth

Store rankings and revenue estimates describe market context. They do not establish ad spend, conversions or ROAS.

Review the market context

02 / Storefront & product

Where the click lands.

Study the product story and store experience behind the acquisition funnel.

Screenshots

Koikoi screenshot 1Koikoi screenshot 2Koikoi screenshot 3Koikoi screenshot 4Koikoi screenshot 5Koikoi screenshot 6Koikoi screenshot 7Koikoi screenshot 8

03 / Market context

The business behind the app.

Keep revenue, downloads and store rankings separate from advertising performance.

How Much Does Koikoi Make?

Monthly Revenue
$1.0K
Annualized estimate
$12.0K
Per Download
$1.00

Platform Performance

🍎iOS
Revenue
$1.0K
Downloads
1.0K
Rating
3.4 (5)

Rating Distribution

3.4
★★★☆☆
5 reviews
5
20%
4
20%
3
0%
2
20%
1
40%

Top Countries

🇮🇹 IT🇯🇵 JP🇫🇷 FR
Reviews (2)
★★☆☆☆TikiShackJack9/17/2019
Not like it's Google counterpart

I thought this was the iPhone version of a popular Google Play version that looks very similar. It's not. There are almost no controls. The game makes playable cards from your hand flash in a very annoying way and there's no way to turn it off.

☆☆☆☆...rmk6/12/2017
Very poor Implementation

There is at least one scoring bug: does not double player score when over seven points but does double computer score 3hen over seven points. The options should be "Koi-Koi" and "Stop" not "continue" and "finish game" There game speed should alter the momentary pause when a card is played to the table not the speed at which cards fly from the deck. The _suggested play_ flashing is too intense and is distracting. Game does not display the point count when offering 'Stop or continue" A game consists of 12 hands not "12 games"

Version History (13)
2.0.44/21/2025
2.0.35/6/2021
2.0.24/8/2018
2.0.110/29/2017
2.0.09/19/2016
1.5.22/23/2016
1.5.110/5/2015
1.510/29/2014
1.49/16/2014
1.37/16/2014
Available In (113 Countries)
🇨🇷 CR🇶🇦 QA🇿🇦 South Africa🇺🇸 United States🇦🇺 Australia🇨🇦 Canada🇨🇳 China🇫🇷 France🇩🇪 Germany🇬🇧 United Kingdom🇮🇹 Italy🇯🇵 Japan🇷🇺 Russia🇩🇿 DZ🇦🇴 AO🇦🇷 Argentina🇦🇹 Austria🇦🇿 AZ🇧🇧 BB🇧🇾 BY🇧🇪 Belgium🇧🇲 BM🇧🇷 Brazil🇧🇬 Bulgaria🇨🇱 Chile🇨🇴 Colombia🇭🇷 Croatia🇨🇿 Czech Republic🇩🇰 Denmark🇩🇴 DO🇪🇨 EC🇪🇬 Egypt🇸🇻 SV🇫🇮 Finland🇬🇭 GH🇬🇷 Greece🇬🇹 GT🇭🇰 Hong Kong🇭🇺 Hungary🇮🇳 India🇮🇩 Indonesia🇮🇪 Ireland🇮🇱 Israel🇰🇿 KZ🇰🇪 Kenya🇰🇼 KW🇱🇧 LB🇱🇹 Lithuania🇱🇺 LU🇲🇴 MO🇲🇬 MG🇲🇾 Malaysia🇲🇽 Mexico🇳🇱 Netherlands🇳🇿 New Zealand🇳🇬 Nigeria🇳🇴 Norway🇴🇲 OM🇵🇰 Pakistan🇵🇦 PA🇵🇪 Peru🇵🇭 Philippines🇵🇱 Poland🇵🇹 Portugal🇷🇴 Romania🇸🇦 Saudi Arabia🇸🇬 Singapore🇸🇰 Slovakia🇸🇮 Slovenia🇪🇸 Spain🇱🇰 LK🇸🇪 Sweden🇨🇭 Switzerland🇹🇼 Taiwan🇹🇭 Thailand🇹🇳 TN🇹🇷 Turkey🇺🇦 Ukraine🇦🇪 UAE🇺🇾 UY🇺🇿 UZ🇻🇪 VE🇻🇳 Vietnam🇧🇴 BO🇰🇭 KH🇪🇪 Estonia🇱🇻 Latvia🇳🇮 NI🇵🇾 PY🇬🇪 GE🇮🇶 IQ🇱🇾 LY🇲🇦 MA🇲🇿 MZ🇲🇲 MM🇾🇪 YE🇧🇭 BH🇨🇾 CY🇲🇹 MT🇷🇸 RS🇧🇯 BJ🇧🇫 BF🇨🇲 CM🇨🇬 CG🇨🇮 CI🇯🇴 JO🇱🇦 LA🇲🇱 ML🇸🇳 SN🇹🇿 TZ🇺🇬 UG🇿🇲 ZM🇿🇼 ZW
Supported Languages (2)
EnglishJapanese
App Details

Koikoi is a game of Hanafuda (Japanese Playing Cards). -How to play Koikoi Throw away the card to the table into play alternately. If there is a mat...

iOS App ID
618834958
Content Rating
4+
Min OS
12.0
Size
9.1 MB
Publisher
Kouichi Hayashi