# 슬립드림 vs Sleep Tech

The clearest difference is in-app purchases: 슬립드림 at none against Sleep Tech's 2. 슬립드림 also leads on iOS requirement (13.4 vs 18.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sleep Tech sells 2 in-app purchases, starting at $1.99 per month. 슬립드림 asks for nothing beyond the download.

슬립드림 ships an update every 10 days, Sleep Tech every 2 weeks. Both last shipped on September 14, 2026.

## The numbers

| Metric | 슬립드림 | Sleep Tech |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Size | 22 MB | 53 MB |
| Requires iOS | **13.4** | 18.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [vivRest Inc.](https://appshunter.io/developer/1578867858) | [Hevers Co.,Ltd](https://appshunter.io/developer/1865857547) |

## What reviewers say

### 슬립드림

[App page](https://appshunter.io/ios/app/id6449168953)

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

**In-app purchases:** none


### Sleep Tech

[App page](https://appshunter.io/ios/app/sleep-tech/id6757299435)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 프리미엄 구독 (1개월) | $1.99 | per month |
| 프리미엄 구독 (1년) | $19.99 | per year |


## Frequently asked questions

### Is 슬립드림 free?

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

### Is Sleep Tech free?

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

### Do 슬립드림 or Sleep Tech have ads?

Neither 슬립드림 nor Sleep Tech shows ads.

### Which is updated more often, 슬립드림 or Sleep Tech?

슬립드림 ships an update every 10 days, and Sleep Tech every 2 weeks. Most recently, 슬립드림 was updated on September 14, 2026 and Sleep Tech on September 14, 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.*