# KSB Sonolyzer vs DropControl

The clearest difference is update cadence: DropControl at every 3 weeks against KSB Sonolyzer'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.

KSB Sonolyzer ships an update every 4 months, DropControl every 3 weeks. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | KSB Sonolyzer | DropControl |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/dropcontrol/id1409694208/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 88 MB | 152 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KSB SE & Co. KGaA](https://appshunter.io/developer/533763415) | [WISECONN ENGINEERING, INC](https://appshunter.io/developer/1060105575) |

## What reviewers say

### KSB Sonolyzer

[App page](https://appshunter.io/ios/app/ksb-sonolyzer/id999364617)

**Features:** macOS Compatibility

**In-app purchases:** none


### DropControl

[App page](https://appshunter.io/ios/app/dropcontrol/id1409694208)

Monitor and control farm irrigation and fertigation systems remotely. Track weather and soil moisture in real-time for efficient resource management and improved crop yields. Access your farm's data anytime, anywhere.

**Highlights:** Real-time weather and soil moisture monitoring, Remote irrigation and fertigation control, Map display of farm operations, Simultaneous monitoring of field nodes, Data analysis for profitable decisions, Cloud and Bluetooth connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is KSB Sonolyzer free?

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

### Is DropControl free?

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

### Do KSB Sonolyzer or DropControl have ads?

Neither KSB Sonolyzer nor DropControl shows ads.

### Which is updated more often, KSB Sonolyzer or DropControl?

KSB Sonolyzer ships an update every 4 months, and DropControl every 3 weeks. Most recently, KSB Sonolyzer was updated on September 18, 2026 and DropControl on September 10, 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.*