# Day2U vs 천싸요

The clearest difference is in-app purchases: 천싸요 at none against Day2U's 1. 천싸요 also leads on ads (none vs shown) and device support (3 vs 1). Day2U's advantage is update cadence (fortnightly vs every 13 months). On price there is nothing between them.

Both are free to download. Day2U sells 1 one-off in-app purchase. 천싸요 asks for nothing beyond the download.

Day2U ships an update fortnightly, 천싸요 every 13 months. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Day2U | 천싸요 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 13 months |
| Size | 25 MB | 16 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CHUNGKIL KIM](https://appshunter.io/developer/960187999) | [kyu tae park](https://appshunter.io/developer/1705650580) |

## What reviewers say

### Day2U

[App page](https://appshunter.io/ios/app/day2u-d-day-countdown/id1456616742)

**Features:** macOS Compatibility, iMessage stickers

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ad | $3.99 | one-time |


### 천싸요

[App page](https://appshunter.io/ios/app/1004yo/id6464342577)

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

**In-app purchases:** none


## Frequently asked questions

### Is Day2U free?

Day2U is free to download, with in-app purchases available.

### Is 천싸요 free?

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

### Do Day2U or 천싸요 have ads?

Day2U shows ads; 천싸요 does not.

### Which is updated more often, Day2U or 천싸요?

Day2U ships an update fortnightly, and 천싸요 every 13 months. Most recently, Day2U was updated on October 5, 2026 and 천싸요 on October 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.*