# 모비싸인(MobiSign) vs USIM스마트인증

The clearest difference is review sentiment: USIM스마트인증 at 83% against 모비싸인(MobiSign)'s 14%. USIM스마트인증 also leads on rating (1.8 vs 1.0) and in-app purchases (none vs 1). 모비싸인(MobiSign)'s advantage is iOS requirement (12.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. 모비싸인(MobiSign) sells 1 in-app purchase, starting at $0.99 per month. USIM스마트인증 asks for nothing beyond the download.

USIM스마트인증 holds the better App Store score, 1.8 against 1.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 14% of 모비싸인(MobiSign)'s written reviews are positive against 83% of USIM스마트인증's.

모비싸인(MobiSign) ships an update every 5 months, USIM스마트인증 every 4 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 모비싸인(MobiSign) | USIM스마트인증 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/mobisign/id510264761/reviews) | **[1.8 (4 ratings)](https://appshunter.io/ios/app/usim/id1288412388/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | 14.3% of reviews | **82.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 46 MB | 50 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [금융결제원 (KFTC)](https://appshunter.io/developer/666154467) | [RaonSecure Co., Ltd.](https://appshunter.io/developer/1288412382) |

## What reviewers say

### 모비싸인(MobiSign)

[App page](https://appshunter.io/ios/app/mobisign/id510264761)

This service allows you to electronically sign documents using your smartphone's digital certificate. It securely stores your certificate and enables signing on PCs through various financial and public services. Enjoy enhanced security and portability for your digital transactions.

**Highlights:** Use smartphone digital certificate on PC, Securely store digital certificates, Electronic signing via smartphone, Convenient certificate copying (QR, code), Compatible with banking, shopping, public services

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MobiSign Monthly Subscription | $0.99 | per month |


### USIM스마트인증

[App page](https://appshunter.io/ios/app/usim/id1288412388)

Securely store your digital certificates on your smartphone, eliminating worries about hacking or leaks. Access your certificates easily for logins and financial transactions anytime, anywhere.

**Highlights:** Secure certificate storage on smartphone, Protection against hacking and leaks, Convenient access for logins and transactions, Portable digital certificate management, Use for year-end tax settlement

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 모비싸인(MobiSign) free?

모비싸인(MobiSign) is free to download, with in-app purchases available.

### Is USIM스마트인증 free?

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

### Which has better reviews, 모비싸인(MobiSign) or USIM스마트인증?

USIM스마트인증 is rated higher. 모비싸인(MobiSign) averages 1.0 out of 5 from 2 ratings, while USIM스마트인증 averages 1.8 from 4 ratings.

### Do 모비싸인(MobiSign) or USIM스마트인증 have ads?

Neither 모비싸인(MobiSign) nor USIM스마트인증 shows ads.

### Which is updated more often, 모비싸인(MobiSign) or USIM스마트인증?

모비싸인(MobiSign) ships an update every 5 months, and USIM스마트인증 every 4 months. Most recently, 모비싸인(MobiSign) was updated on October 8, 2026 and USIM스마트인증 on October 9, 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.*