# SingleID Authenticator vs ICN SMARTPASS (인천공항 스마트패스)

The clearest difference is rating: ICN SMARTPASS (인천공항 스마트패스) at 1.5 against SingleID Authenticator's 1.3. ICN SMARTPASS (인천공항 스마트패스) also leads on ratings volume (167 vs 16). SingleID Authenticator's advantage is iOS requirement (13.0 vs 16.7). On price, review sentiment, update cadence and ads there is nothing between them.

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

ICN SMARTPASS (인천공항 스마트패스) holds the better App Store score, 1.5 against 1.3. That said, the two scores are not equally well evidenced: ICN SMARTPASS (인천공항 스마트패스) has 167 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 7% of SingleID Authenticator's written reviews are positive against 12% of ICN SMARTPASS (인천공항 스마트패스)'s.

SingleID Authenticator ships an update every 2 months, ICN SMARTPASS (인천공항 스마트패스) every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | SingleID Authenticator | ICN SMARTPASS (인천공항 스마트패스) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (16 ratings)](https://appshunter.io/ios/app/singleid-authenticator/id1554967838/reviews) | **[1.5 (167 ratings)](https://appshunter.io/ios/app/icn-smartpass/id6443837919/reviews)** |
| Number of ratings | 16 | **167** |
| Positive reviews | 6.7% of reviews | **12.1% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 54 MB | 209 MB |
| Requires iOS | **13.0** | 16.7 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SAMSUNG SDS Co.,LTD](https://appshunter.io/developer/434934743) | [인천국제공항공사](https://appshunter.io/developer/490515541) |

## What reviewers say

### SingleID Authenticator

[App page](https://appshunter.io/ios/app/singleid-authenticator/id1554967838)

This app provides a convenient way to manage multi-factor authentication for various business systems. It supports biometric, PIN, TOTP, and mOTP methods for easy login. Initial setup involves scanning a QR code or manually entering a service code.

**Highlights:** Multi-Factor Authentication (MFA), Biometric login support, PIN authentication, TOTP and mOTP support, QR code registration, Mobile push authentication

**Features:** Vision Pro support

**In-app purchases:** none


### ICN SMARTPASS (인천공항 스마트패스)

[App page](https://appshunter.io/ios/app/icn-smartpass/id6443837919)

Register your Smart Pass ID and use the airport with facial recognition. Once registered with your passport and face, it's usable for 5 years with robust security features. Supports mobile and paper boarding passes, with upcoming reservation services.

**Highlights:** Facial recognition airport access, 5-year registration validity, Passport and face registration, Secure authentication (anti-forgery, liveness), Mobile and paper boarding pass support, Upcoming reservation services

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ⭐ Works well with iPhone 11 Pro Max
- ✅ Passport chip scanning successful for some users
- 🔑 Helpful tips for scanning US passports

**What reviewers complain about**

- 🚫 Passport chip scanning failure for many users
- 🤯 Difficult and confusing to use
- 🐞 Frequent crashes and bugs
- 🙅‍♀️ Doesn't work with non-Korean passports/boarding passes

**Reported bugs**

- Passport chip scanning not working
- Boarding pass QR code not recognized
- Registration and verification process issues

**Requested features**

- Manual passport information entry option
- Better instructions and guidance for users
- Support for more passport types and boarding pass formats


## Frequently asked questions

### Is SingleID Authenticator free?

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

### Is ICN SMARTPASS (인천공항 스마트패스) free?

ICN SMARTPASS (인천공항 스마트패스) is free to download, with no in-app purchases.

### Which has better reviews, SingleID Authenticator or ICN SMARTPASS (인천공항 스마트패스)?

ICN SMARTPASS (인천공항 스마트패스) is rated higher. SingleID Authenticator averages 1.3 out of 5 from 16 ratings, while ICN SMARTPASS (인천공항 스마트패스) averages 1.5 from 167 ratings.

### Do SingleID Authenticator or ICN SMARTPASS (인천공항 스마트패스) have ads?

Neither SingleID Authenticator nor ICN SMARTPASS (인천공항 스마트패스) shows ads.

### Which is updated more often, SingleID Authenticator or ICN SMARTPASS (인천공항 스마트패스)?

SingleID Authenticator ships an update every 2 months, and ICN SMARTPASS (인천공항 스마트패스) every 6 weeks. Most recently, SingleID Authenticator was updated on November 3, 2026 and ICN SMARTPASS (인천공항 스마트패스) on November 3, 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.*