# Endress+Hauser Discovery Sales vs Proactive System

The clearest difference is update cadence: Proactive System at fortnightly against Endress+Hauser Discovery Sales's every 5 months. Proactive System also leads on device support (3 vs 1). Endress+Hauser Discovery Sales's advantage is iOS requirement (9.0 vs 15.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Endress+Hauser Discovery Sales ships an update every 5 months, Proactive System fortnightly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Endress+Hauser Discovery Sales | Proactive System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 53 MB | 26 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Endress and Hauser Instruments International AG](https://appshunter.io/developer/513969520) | [Mohammed Kamaran](https://appshunter.io/developer/1694181452) |

## What reviewers say

### Endress+Hauser Discovery Sales

[App page](https://appshunter.io/ios/app/endress-plus-hauser-discovery-sales/id1062322814)

**In-app purchases:** none


### Proactive System

[App page](https://appshunter.io/ios/app/proactive-system/id6753912768)

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

**In-app purchases:** none


## Frequently asked questions

### Is Endress+Hauser Discovery Sales free?

Endress+Hauser Discovery Sales is free to download, with no in-app purchases.

### Is Proactive System free?

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

### Do Endress+Hauser Discovery Sales or Proactive System have ads?

Neither Endress+Hauser Discovery Sales nor Proactive System shows ads.

### Which is updated more often, Endress+Hauser Discovery Sales or Proactive System?

Endress+Hauser Discovery Sales ships an update every 5 months, and Proactive System fortnightly. Most recently, Endress+Hauser Discovery Sales was updated on October 26, 2026 and Proactive System on October 25, 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.*