# 上門 vs PreView

The clearest difference is in-app purchases: 上門 at none against PreView's 3. 上門 also leads on update cadence (weekly vs every 2 months) and iOS requirement (9.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PreView sells 3 in-app purchases, starting at $6.99 per month. 上門 asks for nothing beyond the download.

上門 ships an update weekly, PreView every 2 months. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 上門 | PreView |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | — | Freemium |
| Size | 88 MB | 173 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HIPPOS Systems Limited](https://appshunter.io/developer/1680491922) | [sanghun cho](https://appshunter.io/developer/1860799254) |

## What reviewers say

### 上門

[App page](https://appshunter.io/ios/app/id1616619925)

**Features:** macOS Compatibility

**In-app purchases:** none


### PreView

[App page](https://appshunter.io/ios/app/preview-pmu-simulator/id6756478106)

This app helps beauty professionals simulate PMU (Permanent Makeup) results for clients. It offers AI-powered brow removal, golden ratio guides, realistic texture simulations, and shareable before/after care cards. Clients can also use it to preview designs on their own faces.

**Highlights:** AI brow removal, Golden ratio facial analysis, Realistic PMU texture simulation, Before & After care card creation, Web and app client consultation hub, Simulate on own face

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $6.99 | per month |
| Yearly Subscription | $69.99 | per year |
| Lifetime License | $149.99 | one-time |


## Frequently asked questions

### Is 上門 free?

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

### Is PreView free?

PreView is free to download, with in-app purchases available.

### Do 上門 or PreView have ads?

Neither 上門 nor PreView shows ads.

### Which is updated more often, 上門 or PreView?

上門 ships an update weekly, and PreView every 2 months. Most recently, 上門 was updated on October 5, 2026 and PreView on October 24, 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.*