# The challenge is impossible vs Boss Killers

The clearest difference is ads: The challenge is impossible at none against Boss Killers's shown. Boss Killers's advantage is update cadence (daily vs every 78 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

The challenge is impossible ships an update every 78 months, Boss Killers daily. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | The challenge is impossible | Boss Killers |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 78 months | **Daily** |
| Size | 35 MB | 110 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [志荣 胡](https://appshunter.io/developer/1057018236) | [Any Games OU](https://appshunter.io/developer/1513586172) |

## What reviewers say

### The challenge is impossible

[App page](https://appshunter.io/ios/app/the-challenge-is-impossible/id1384619971)

**Features:** macOS Compatibility

**In-app purchases:** none


### Boss Killers

[App page](https://appshunter.io/ios/app/boss-killers/id6502904408)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The challenge is impossible free?

The challenge is impossible is free to download, with no in-app purchases.

### Is Boss Killers free?

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

### Do The challenge is impossible or Boss Killers have ads?

Boss Killers shows ads; The challenge is impossible does not.

### Which is updated more often, The challenge is impossible or Boss Killers?

The challenge is impossible ships an update every 78 months, and Boss Killers daily. Most recently, The challenge is impossible was updated on October 26, 2026 and Boss Killers on October 25, 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.*