# (구)모바일뷰어 vs 휘슬

The clearest difference is review sentiment: 휘슬 at 69% against (구)모바일뷰어's 16%. 휘슬 also leads on rating (3.0 vs 1.0) and ratings volume (14 vs 2). (구)모바일뷰어's advantage is iOS requirement (12.0 vs 15). On price, update cadence, ads and in-app purchases there is nothing between them.

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

휘슬 holds the better App Store score, 3.0 against 1.0. That said, the two scores are not equally well evidenced: 휘슬 has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 16% of (구)모바일뷰어's written reviews are positive against 69% of 휘슬's.

(구)모바일뷰어 ships an update every 2 months, 휘슬 monthly. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | (구)모바일뷰어 | 휘슬 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/id770575783/reviews) | **[3.0 (14 ratings)](https://appshunter.io/ios/app/id1552301194/reviews)** |
| Number of ratings | 2 | **14** |
| Positive reviews | 16.4% of reviews | **69.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 127 MB | 129 MB |
| Requires iOS | **12.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [S1 Corporation](https://appshunter.io/developer/352726008) | [Monoplatform Co., Ltd.](https://appshunter.io/developer/1552301616) |

## What reviewers say

### (구)모바일뷰어

[App page](https://appshunter.io/ios/app/id770575783)

This application is no longer available and has been replaced by the S1 MoDU App. Users can transition their existing service to the new app to continue access. Thank you for your past usage.

**Highlights:** Service termination notice, Transition to S1 MoDU App, Photo capture storage, Voice recognition search, Microphone access

**In-app purchases:** none


### 휘슬

[App page](https://appshunter.io/ios/app/id1552301194)

This app is a comprehensive platform for car owners, offering services like parking violation alerts, vehicle inspection scheduling, car wash bookings, and used car sales. It also provides vehicle management tools and a community forum for drivers.

**Highlights:** Parking violation alerts, Vehicle inspection scheduling, Car wash booking, Used car sales, Fine and toll inquiry, Driver community forum

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is (구)모바일뷰어 free?

(구)모바일뷰어 is free to download, with no in-app purchases.

### Is 휘슬 free?

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

### Which has better reviews, (구)모바일뷰어 or 휘슬?

휘슬 is rated higher. (구)모바일뷰어 averages 1.0 out of 5 from 2 ratings, while 휘슬 averages 3.0 from 14 ratings.

### Do (구)모바일뷰어 or 휘슬 have ads?

Neither (구)모바일뷰어 nor 휘슬 shows ads.

### Which is updated more often, (구)모바일뷰어 or 휘슬?

(구)모바일뷰어 ships an update every 2 months, and 휘슬 monthly. Most recently, (구)모바일뷰어 was updated on November 1, 2026 and 휘슬 on November 7, 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.*