# 스마트수자인 vs 윗딜 고산&산곡

The clearest difference is update cadence: 윗딜 고산&산곡 at monthly against 스마트수자인's every 4 months. 스마트수자인's advantage is iOS requirement (8.1 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

스마트수자인 ships an update every 4 months, 윗딜 고산&산곡 monthly. The most recent releases landed on June 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 스마트수자인 | 윗딜 고산&산곡 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 21 MB | 25 MB |
| Requires iOS | **8.1** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HYUNDAI HT Co., Ltd.](https://appshunter.io/developer/495649043) | [Orora Platform Company](https://appshunter.io/developer/1593348188) |

## What reviewers say

### 스마트수자인

[App page](https://appshunter.io/ios/app/id1108893068)

**Features:** macOS Compatibility

**In-app purchases:** none


### 윗딜 고산&산곡

[App page](https://appshunter.io/ios/app/and/id6744064518)

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

**In-app purchases:** none


## Frequently asked questions

### Is 스마트수자인 free?

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

### Is 윗딜 고산&산곡 free?

윗딜 고산&산곡 is free to download, with no in-app purchases.

### Do 스마트수자인 or 윗딜 고산&산곡 have ads?

Neither 스마트수자인 nor 윗딜 고산&산곡 shows ads.

### Which is updated more often, 스마트수자인 or 윗딜 고산&산곡?

스마트수자인 ships an update every 4 months, and 윗딜 고산&산곡 monthly. Most recently, 스마트수자인 was updated on June 10, 2026 and 윗딜 고산&산곡 on September 23, 2026.

---

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