# Incident RIVM vs DutyFlow

The clearest difference is update cadence: DutyFlow at every 2 months against Incident RIVM's every 4 months. 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.

Incident RIVM ships an update every 4 months, DutyFlow every 2 months. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Incident RIVM | DutyFlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 6 MB | 16 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RIVM](https://appshunter.io/developer/894584054) | [OrcaGroup](https://appshunter.io/developer/1046828969) |

## What reviewers say

### Incident RIVM

[App page](https://appshunter.io/ios/app/incident-rivm/id1122916924)

**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 Incident RIVM free?

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

### Is DutyFlow free?

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

### Do Incident RIVM or DutyFlow have ads?

Neither Incident RIVM nor DutyFlow shows ads.

### Which is updated more often, Incident RIVM or DutyFlow?

Incident RIVM ships an update every 4 months, and DutyFlow every 2 months. Most recently, Incident RIVM was updated on October 19, 2026 and DutyFlow on October 11, 2026.

---

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