# Hydrosense Pro Legionella vs ConstructionCRM

The clearest difference is update cadence: ConstructionCRM at every 3 weeks against Hydrosense Pro Legionella's every 6 months. Hydrosense Pro Legionella's advantage is iOS requirement (10.0 vs 15.6). 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.

Hydrosense Pro Legionella ships an update every 6 months, ConstructionCRM every 3 weeks. The most recent releases landed on October 23, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Hydrosense Pro Legionella | ConstructionCRM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/hydrosense-pro-legionella/id807777307/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 178 MB | 34 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Albagaia ltd.](https://appshunter.io/developer/780552139) | [ConstructionCRM](https://appshunter.io/developer/955797162) |

## What reviewers say

### Hydrosense Pro Legionella

[App page](https://appshunter.io/ios/app/hydrosense-pro-legionella/id807777307)

This app captures and reports data for water systems at risk of Legionella infection. It allows for instant recording of test results, scheduling, and email alerts, with secure data storage and traceability.

**Highlights:** Accurate reading of rapid Legionella test results, Instant data access and reporting, Traceability of test location and time, Messaging duty holders for positive results, Data integration across company accounts, Scheduling and recording of water temperature and biocide levels

**Features:** macOS Compatibility

**In-app purchases:** none


### ConstructionCRM

[App page](https://appshunter.io/ios/app/constructioncrm/id1568094809)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydrosense Pro Legionella free?

Hydrosense Pro Legionella is free to download, with no in-app purchases.

### Is ConstructionCRM free?

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

### Do Hydrosense Pro Legionella or ConstructionCRM have ads?

Neither Hydrosense Pro Legionella nor ConstructionCRM shows ads.

### Which is updated more often, Hydrosense Pro Legionella or ConstructionCRM?

Hydrosense Pro Legionella ships an update every 6 months, and ConstructionCRM every 3 weeks. Most recently, Hydrosense Pro Legionella was updated on October 23, 2026 and ConstructionCRM on October 17, 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.*