# Challenger App vs DSO

The clearest difference is update cadence: DSO at every 6 weeks against Challenger App's every 5 months. Challenger App's advantage is iOS requirement (11.0 vs 13.0). 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.

Challenger App ships an update every 5 months, DSO every 6 weeks. The most recent releases landed on September 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Challenger App | DSO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Size | 41 MB | 74 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Coteng NV](https://appshunter.io/developer/1479551392) | [MINAPHARM PHARMACEUTICALS AND CHEMICAL INDUSTRIES](https://appshunter.io/developer/1133180782) |

## What reviewers say

### Challenger App

[App page](https://appshunter.io/ios/app/challenger-app/id1586938718)

**Features:** macOS Compatibility

**In-app purchases:** none


### DSO

[App page](https://appshunter.io/ios/app/dso/id6741147047)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Challenger App free?

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

### Is DSO free?

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

### Do Challenger App or DSO have ads?

Neither Challenger App nor DSO shows ads.

### Which is updated more often, Challenger App or DSO?

Challenger App ships an update every 5 months, and DSO every 6 weeks. Most recently, Challenger App was updated on September 28, 2026 and DSO 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.*