# ERS vs Koikoi

The clearest difference is price: ERS at Free against Koikoi's $1.99. ERS also leads on review sentiment (45% vs 20%) and iOS requirement (8.0 vs 17.6). Koikoi's advantage is rating (3.4 vs 1.7) and chart position (#90 vs unranked). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

ERS is free to download; Koikoi costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Koikoi holds the better App Store score, 3.4 against 1.7. Both are backed by a comparable volume of ratings — 11 and 5 respectively. Written reviews complicate that: 45% of ERS's written reviews are positive against 20% of Koikoi's, so the app with the better star average is not the one people write more warmly about.

ERS ships an update every 8 months, Koikoi every 6 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | ERS | Koikoi |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [1.7 (11 ratings)](https://appshunter.io/ios/app/ers/id361904617/reviews) | **[3.4 (5 ratings)](https://appshunter.io/ios/app/koikoi/id618834958/reviews)** |
| Number of ratings | **11** | 5 |
| Positive reviews | **45.5% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#90** |
| Size | 11 MB | 9 MB |
| Requires iOS | **8.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KKIT Creations](https://appshunter.io/developer/361904620) | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) |

## What reviewers say

### ERS

[App page](https://appshunter.io/ios/app/ers/id361904617)

A highly customizable and entertaining digital card game based on Egyptian Rat Slap. Play against friends or AI with numerous rule and art combinations for a unique experience.

**Highlights:** Customizable rules, Personalizable artwork, Play against AI, Multiplayer on one device, Multiple card play methods, 13 favorite rules

**Features:** Vision Pro support

**In-app purchases:** none


### Koikoi

[App page](https://appshunter.io/ios/app/koikoi/id618834958)

**Currently charting:** #90 Top Paid · Casino (US App Store)

Experience the traditional Japanese card game of Hanafuda. Match cards to collect sets and score points over a series of rounds. The player with the highest total score after 12 games wins.

**Highlights:** Hanafuda card game, Match cards to collect sets, Score points, 12-game rounds, Automatic game record saving

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ERS free?

ERS is free to download, with no in-app purchases.

### Is Koikoi free?

Koikoi costs $1.99, with no in-app purchases.

### Which has better reviews, ERS or Koikoi?

Koikoi is rated higher. ERS averages 1.7 out of 5 from 11 ratings, while Koikoi averages 3.4 from 5 ratings.

### Do ERS or Koikoi have ads?

Neither ERS nor Koikoi shows ads.

### Which is updated more often, ERS or Koikoi?

ERS ships an update every 8 months, and Koikoi every 6 months. Most recently, ERS was updated on November 1, 2026 and Koikoi on November 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*