# Hanafuda･Koi Koi — Japanese traditional card game

> Two-player Japanese card game using Hanafuda cards to form scoring combinations. (iPhone/iPad app by 慧 姚.)

- Source: https://appshunter.io/ios/app/hanafudakoi-koi/id1339558217 (this page in markdown: same URL + `.md`)
- Developer: [慧 姚](https://appshunter.io/developer/1339558216)
- Category: Games, Entertainment, Card, Puzzle
- Price: Free with in-app purchases
- Rating: 4.60/5 from 553 App Store ratings · 46 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 134 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2018-01-25
- Data updated: 2026-08-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/hanafudakoi-koi/id1339558217/reviews.md

## What is Hanafuda･Koi Koi?

Koi-Koi (Japanese: こいこい) is a popular card game in Japan played with Hanafuda cards  which is one of ways to play Hanafuda(Japanese playing cards) with two players.
The goal of the game is to make the combination of severalcards earlier than your opponent. The phrase "koi-koi" means "come on" in Japanese which is said when the player wants to continue the hand.

The object of the game is to form special card combinations called "yaku" from cards accumulated in a point pile. Players can gain cards in their point piles by matching cards in their hands, or drawn from the draw pile, with cards on the table. Once a yaku has been made, a player can stop to cash in points, or keep going (referred to as "koi-koi", hence the name of the game) to form additional yaku for more points. The point values assigned to individual cards have no effect on the score, but they are helpful to judge their value in forming yaku.

## Key features

- Play traditional Japanese card game
- Use Hanafuda cards
- Form 'yaku' card combinations
- Score points by making combinations
- Option to 'koi-koi' for more points

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## What do users think of Hanafuda･Koi Koi?

Overall sentiment: mixed

**Pros**

- 👍 Excellent for learning how to play koi-koi
- 🎮 Well-coded AI opponent with good difficulty levels
- 🎨 Beautiful card designs and smooth animations
- 📱 Playable offline without Wi-Fi
- ⚡ Fast and responsive gameplay
- 🧠 Helpful card highlighting for beginners
- 😌 Relaxing and engaging gameplay
- 🎯 Clear rules and helpful guidance

**Cons**

- 📺 Excessive and aggressive advertisements
- 🔊 Ads are loud and disruptive to music
- 🐛 Ads frequently crash the app
- 📱 Poor display on newer iPhone models (notch obstruction)
- 🔤 Incomplete English translation (Japanese/Chinese text remains)
- 📐 Small card size and poor portrait orientation visibility
- 🎮 Overly sensitive card-swiping mechanics
- 🔧 Scoring discrepancies with official rules
- 🎯 Cannot select which card to match when duplicates exist
- 💾 Lost ad-removal purchases after app updates

**Commonly reported bugs**

- App crashes frequently, especially with Facebook ads
- Ads freeze without countdown timer
- Ads lack close buttons or are difficult to close
- App crashes on startup (some devices)
- Music/BGM not working properly
- Card selection sensitivity causes wrong card to be played
- Koi-koi dialog obscures game board completely
- Display issues with newer iPhone models (notch obstruction)
- Ad-removal purchases not restored after updates
- Incorrect yaku point values compared to official rules

**Most requested features**

- Multiplayer functionality (online or local)
- Ability to review scored cards during koi-koi decision
- Landscape mode support with better card visibility
- Option to cancel card selection after dragging
- Full English translation of all game elements
- Paid ad-removal option
- 12-month full game length option
- Better koi-koi decision dialog placement
- Music/BGM improvements
- Improved card selection UI for duplicate matches

## Recent user reviews (10 of 46)

All indexed reviews: https://appshunter.io/ios/app/hanafudakoi-koi/id1339558217/reviews.md

### 3/5 — Impossible

*2026-07-08*

Don’t get me wrong, it’s a great hanafuda game, however I might have a feeling that in Normal mode, the AI opponent is tweaked. What I mean is for example, when I start a match, no matter what, if I have a pine card, it always ends up with a crane in their hands. If I have a cherry blossom, It Always ends with the curtain. When I have a susuki grass card, It Always Has A Moon In Its Hands! No matter what, no matter what kind of combination I attempt, it’s tweaked, Almost as if it’s cheated to have more light cards than the opponent. The Game is good, the bots are suspicious. P.s- here’s your stars

### 5/5 — 10/10 would recommend

*2026-01-18*

This game is absolutely amazing and you’re able to play it without any Wi-Fi. I would 100% recommend to any of my friends extremely fun game and it helps me relax

### 4/5 — Fun but missing a few quality-of-life features

*2025-05-21*

In particular: 1. I'd like to be able to review what cards have been scored while deciding whether to "koi-koi" or "stop." and 2. When I touch a card in my hand and begin to drag it, I'd like to be able to return it to my hand if I change my mind about which card I want to play. (Right now it often plays the card even if I drag it back to my hand area.)

### 1/5 — Barely any Fun!

*2025-03-07, version 1.6*

Too many Ads!! I can barely play ONE round without getting hit with so many ads!And good trying to listen to your music while playing. It constantly cuts it off while playing.

### 3/5 — It’s Ok

*2024-12-23, version 1.5*

Great implementation, but the advertisements are very aggressive for such a short game, and they occasionally break and force you to restart your game.

### 5/5 — Been playing this for years

*2024-07-17*

Excellent game; the AI is well coded. I love the card designs and the shuffling/playing animations. I highly recommend this if you’re looking to turn your brain off for a little while, as you can even change the length of the games as well.

### 3/5 — Too much adds

*2024-05-15, version 1.5*

Too much adds

### 4/5 — Yaku Scoring Discrepancy

*2024-04-25*

The point values in-game are different from the ones in the rules. (E.g. the rules say goko is 10 but I got 15 for it, the rules say ameshiko is 7 but I got 8 for it)

### 1/5 — Fun but ads ruin it

*2024-02-02, version 1.5*

Really obnoxious ads. I’d gladly pay to remove them, but not sure if you can.

### 5/5 — Useful for learning how to play koi-koi

*2023-09-14*

Wish it was online or two player as it has been noted in other reviews, but also finally feel like I’m picking up how to play koi-koi after using other apps and reading a book to describe gameplay. I really enjoy how the app separates out your captures as you go along and highlights what yaku is possible and what yaku you are close to attaining. Like other reviewers have said, I wish the koi-koi decision screen was moved slightly out of the way when trying to decide if you can score again before choosing to koi-koi or not! I know this app is older but I think there’s a lot of use here still to be gotten out of this.

## Frequently asked questions about Hanafuda･Koi Koi

### What is Hanafuda Koi Koi?

Hanafuda Koi Koi is a two-player card game played with Hanafuda cards, a traditional Japanese deck. The goal is to be the first to form specific card combinations, called 'yaku', to score points.

### How do you play Hanafuda Koi Koi?

Players match cards from their hand or the draw pile with cards on the table to form 'yaku'. Once a 'yaku' is made, you can choose to cash in your points or say 'koi-koi' to continue playing for more points and higher scores.

### Is Hanafuda Koi Koi free to play?

The application is free to download and play. However, it does include advertisements and offers in-app purchases, which may enhance the gameplay experience.

### What are the main features of this app?

This app allows you to play the traditional Japanese Koi-Koi card game using Hanafuda cards. Key features include forming 'yaku' combinations, scoring points, and the strategic decision to continue playing for more points by saying 'koi-koi'.

### Who is this game for?

This game is designed for individuals who enjoy traditional card games, strategy games, or are interested in experiencing Japanese culture through its popular pastimes.

## Version history (last 5 releases)

### 1.6.2 — 2025-03-28

bug fixed

### 1.6.1 — 2025-03-17

bug fixed

### 1.6 — 2025-03-04

bug fixes

### 1.5 — 2021-07-07

bug fixes

### 1.4.4 — 2020-12-22

bug fixes

## Apps similar to Hanafuda･Koi Koi

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## More apps by 慧 姚

- [Mahjong Solitaire: Earth](https://appshunter.io/ios/app/mahjong-solitaire-earth/id1447788276)

All apps by 慧 姚: https://appshunter.io/developer/1339558216

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*