# KSB FlowManager vs RMS Manager

The clearest difference is update cadence: KSB FlowManager at every 6 weeks against RMS Manager's every 4 months. RMS Manager'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.

KSB FlowManager ships an update every 6 weeks, RMS Manager every 4 months. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | KSB FlowManager | RMS Manager |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Size | 260 MB | 27 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KSB SE & Co. KGaA](https://appshunter.io/developer/533763415) | [Suryalog](https://appshunter.io/developer/1479407884) |

## What reviewers say

### KSB FlowManager

[App page](https://appshunter.io/ios/app/ksb-flowmanager/id1251906586)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RMS Manager

[App page](https://appshunter.io/ios/app/rms-manager/id6447936158)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KSB FlowManager free?

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

### Is RMS Manager free?

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

### Do KSB FlowManager or RMS Manager have ads?

Neither KSB FlowManager nor RMS Manager shows ads.

### Which is updated more often, KSB FlowManager or RMS Manager?

KSB FlowManager ships an update every 6 weeks, and RMS Manager every 4 months. Most recently, KSB FlowManager was updated on September 18, 2026 and RMS Manager on September 9, 2026.

---

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