# VSG Congres App vs DutyFlow

The clearest difference is update cadence: DutyFlow at every 2 months against VSG Congres App's every 5 months. VSG Congres App's advantage is device support (3 vs 1). On price, ads, in-app purchases 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.

VSG Congres App ships an update every 5 months, DutyFlow every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | VSG Congres App | DutyFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 65 MB | 16 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VSG Studie en Congres B.V.](https://appshunter.io/developer/1363875649) | [OrcaGroup](https://appshunter.io/developer/1046828969) |

## What reviewers say

### VSG Congres App

[App page](https://appshunter.io/ios/app/vsg-congres-app/id911061363)

**Features:** macOS Compatibility

**In-app purchases:** none


### DutyFlow

[App page](https://appshunter.io/ios/app/dutyflow/id1444017871)

**In-app purchases:** none


## Frequently asked questions

### Is VSG Congres App free?

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

### Is DutyFlow free?

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

### Do VSG Congres App or DutyFlow have ads?

Neither VSG Congres App nor DutyFlow shows ads.

### Which is updated more often, VSG Congres App or DutyFlow?

VSG Congres App ships an update every 5 months, and DutyFlow every 2 months. Most recently, VSG Congres App was updated on November 1, 2026 and DutyFlow on November 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.*