# STEX Sync vs 버닝챌린지

The clearest difference is update cadence: 버닝챌린지 at every 2 months against STEX Sync's every 4 months. STEX Sync's advantage is iOS requirement (12.0 vs 15.0). 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.

STEX Sync ships an update every 4 months, 버닝챌린지 every 2 months. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | STEX Sync | 버닝챌린지 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 18 MB | 117 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Taeha Mechatronics Co., Ltd.](https://appshunter.io/developer/1664269532) | [NeumaFIT Co.,ltd](https://appshunter.io/developer/1646227461) |

## What reviewers say

### STEX Sync

[App page](https://appshunter.io/ios/app/stex-sync/id1664269530)

**Features:** macOS Compatibility

**In-app purchases:** none


### 버닝챌린지

[App page](https://appshunter.io/ios/app/id6778677981)

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

**In-app purchases:** none


## Frequently asked questions

### Is STEX Sync free?

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

### Is 버닝챌린지 free?

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

### Do STEX Sync or 버닝챌린지 have ads?

Neither STEX Sync nor 버닝챌린지 shows ads.

### Which is updated more often, STEX Sync or 버닝챌린지?

STEX Sync ships an update every 4 months, and 버닝챌린지 every 2 months. Most recently, STEX Sync was updated on October 15, 2026 and 버닝챌린지 on October 6, 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.*