# KORAIL+ vs SUM Air

The clearest difference is review sentiment: SUM Air at 100% against KORAIL+'s 11%. KORAIL+'s advantage is update cadence (every 5 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KORAIL+ ships an update every 5 days, SUM Air every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | KORAIL+ | SUM Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.4 (11 ratings)](https://appshunter.io/ios/app/korail-plus/id1000558562/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 11.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 137 MB | 24 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [한국철도공사](https://appshunter.io/developer/404736496) | [SUMAIR Co., Ltd.](https://appshunter.io/developer/1700207324) |

## What reviewers say

### KORAIL+

[App page](https://appshunter.io/ios/app/korail-plus/id1000558562)

This application facilitates the purchase of tickets for the Korea Railroad. It provides a convenient platform for travelers to book their train journeys across the country.

**Highlights:** Purchase train tickets, Korea Railroad journeys, Convenient booking platform, Travel across the country

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🔥 Fire
- 👍 No problems

**What reviewers complain about**

- 🐛 Horrible design and bugs
- 🤯 Charges card but loses ticket
- 🤔 Can't access menu or view tickets
- 🤯 Doesn't work on iPhones
- 🤯 Doesn't work with foreign credit cards

**Reported bugs**

- Ticket purchase info gets lost
- Can't access menu or view tickets
- Doesn't work on iPhones
- Doesn't work with foreign credit cards
- Crashes, freezes, and is unusable

**Requested features**

- Add English language support
- Allow non-Korean phone numbers and credit cards
- Improve user experience and stability


### SUM Air

[App page](https://appshunter.io/ios/app/sum-air/id6759547908)

Book flights, manage your itinerary, and access mobile boarding passes for a seamless travel experience. Enjoy app-exclusive promotions and real-time updates for domestic travel within Korea.

**Highlights:** Real-time flight booking, Manage bookings and cancellations, Mobile boarding pass, Multiple payment options, App-exclusive promotions, Real-time push notifications

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is KORAIL+ free?

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

### Is SUM Air free?

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

### Do KORAIL+ or SUM Air have ads?

Neither KORAIL+ nor SUM Air shows ads.

### Which is updated more often, KORAIL+ or SUM Air?

KORAIL+ ships an update every 5 days, and SUM Air every 3 weeks. Most recently, KORAIL+ was updated on October 24, 2026 and SUM Air on October 20, 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.*