# UPDOWN 업다운 vs BlackJack Blitz 21

The clearest difference is iOS requirement: BlackJack Blitz 21 at 12.0 against UPDOWN 업다운's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on September 12, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | UPDOWN 업다운 | BlackJack Blitz 21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/blackjack-blitz-21/id6752260403/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 97.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | — | Free |
| Size | 4 MB | 116 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [MinGi Joe](https://appshunter.io/developer/1813086882) | [Prince Yadav](https://appshunter.io/developer/1838515785) |

## What reviewers say

### UPDOWN 업다운

[App page](https://appshunter.io/ios/app/updown/id6745585932)

**Features:** macOS Compatibility

**In-app purchases:** none


### BlackJack Blitz 21

[App page](https://appshunter.io/ios/app/blackjack-blitz-21/id6752260403)

Experience the thrill of Blackjack with this fast-paced card game. Enjoy stunning visuals and engaging gameplay without any real gambling. It's designed for endless fun and quick rounds of 21.

**Highlights:** Fast-paced gameplay, Stunning visuals, Thrilling action, Endless fun, No real gambling

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Impeccable updated flow
- 🔒 Perfect privacy, no creepy tracking
- 🎨 Stunning graphics, cinematic feel
- ⚡ Snappy, smooth gameplay, no lag
- 💰 Enjoyable, no real gambling risk


## Frequently asked questions

### Is UPDOWN 업다운 free?

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

### Is BlackJack Blitz 21 free?

BlackJack Blitz 21 is free to download, with no in-app purchases.

### Do UPDOWN 업다운 or BlackJack Blitz 21 have ads?

Neither UPDOWN 업다운 nor BlackJack Blitz 21 shows ads.

### Which is updated more often, UPDOWN 업다운 or BlackJack Blitz 21?

UPDOWN 업다운 ships an update every 2 days, and BlackJack Blitz 21 every 2 days. Most recently, UPDOWN 업다운 was updated on September 12, 2026 and BlackJack Blitz 21 on September 21, 2026.

---

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