# U vs 스마트안전TBM

The clearest difference is update cadence: 스마트안전TBM at every 2 weeks against U's every 4 months. U's advantage is iOS requirement (12.3 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

U ships an update every 4 months, 스마트안전TBM every 2 weeks. The most recent releases landed on October 22, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | U | 스마트안전TBM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 7 MB | 24 MB |
| Requires iOS | **12.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MIN HO KIM](https://appshunter.io/developer/582570599) | [(주) 지에스아이엘](https://appshunter.io/developer/1269878774) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-classtblstudent/id1485687049)

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

**In-app purchases:** none


### 스마트안전TBM

[App page](https://appshunter.io/ios/app/tbm/id6744890459)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is 스마트안전TBM free?

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

### Do U or 스마트안전TBM have ads?

Neither U nor 스마트안전TBM shows ads.

### Which is updated more often, U or 스마트안전TBM?

U ships an update every 4 months, and 스마트안전TBM every 2 weeks. Most recently, U was updated on October 22, 2026 and 스마트안전TBM on October 2, 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.*