# 울타리 vs Keyin Plus

The clearest difference is review sentiment: Keyin Plus at 100% against 울타리's 43%. Keyin Plus also leads on in-app purchases (none vs 4) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 울타리 sells 4 one-off in-app purchases. Keyin Plus asks for nothing beyond the download.

울타리 ships an update every 2 months, Keyin Plus every 6 weeks. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 울타리 | Keyin Plus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 43.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 62 MB | 35 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [T.M.System Co., Ltd.](https://appshunter.io/developer/549067087) | [RAONARK Ltd.](https://appshunter.io/developer/1581955892) |

## What reviewers say

### 울타리

[App page](https://appshunter.io/ios/app/id1164779588)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1개월 사용권 | $1.99 | one-time |
| 3개월 사용권 | $4.99 | one-time |
| 6개월 사용권 | $8.99 | one-time |
| 12개월 사용권 | $15.99 | one-time |


### Keyin Plus

[App page](https://appshunter.io/ios/app/keyin-plus/id1581955890)

Manage your smart door lock remotely. Receive real-time alerts for all lock activities, including locking, unlocking, and alarms. Automatically unlock your door when you approach and issue temporary keys to guests.

**Highlights:** Push notifications for lock events, Automatic door unlocking via Bluetooth, One-touch key issuance for family and guests, Detailed event history management, Door lock device settings, Manage multiple security devices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 울타리 free?

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

### Is Keyin Plus free?

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

### Do 울타리 or Keyin Plus have ads?

Neither 울타리 nor Keyin Plus shows ads.

### Which is updated more often, 울타리 or Keyin Plus?

울타리 ships an update every 2 months, and Keyin Plus every 6 weeks. Most recently, 울타리 was updated on October 21, 2026 and Keyin Plus on October 6, 2026.

---

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