# Flex Hazards vs BS 5839

The clearest difference is update cadence: BS 5839 at every 2 weeks against Flex Hazards's every 6 months. Flex Hazards's advantage is iOS requirement (12.0 vs 18.6). 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.

Flex Hazards ships an update every 6 months, BS 5839 every 2 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Flex Hazards | BS 5839 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 25 MB | 3 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CGA Technology](https://appshunter.io/developer/1237111538) | [Zentralize](https://appshunter.io/developer/1858937021) |

## What reviewers say

### Flex Hazards

[App page](https://appshunter.io/ios/app/flex-hazards/id1474786808)

**Features:** macOS Compatibility

**In-app purchases:** none


### BS 5839

[App page](https://appshunter.io/ios/app/bs-5839-1-support-app/id6756184575)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flex Hazards free?

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

### Is BS 5839 free?

BS 5839 is free to download, with no in-app purchases.

### Do Flex Hazards or BS 5839 have ads?

Neither Flex Hazards nor BS 5839 shows ads.

### Which is updated more often, Flex Hazards or BS 5839?

Flex Hazards ships an update every 6 months, and BS 5839 every 2 weeks. Most recently, Flex Hazards was updated on October 29, 2026 and BS 5839 on October 28, 2026.

---

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