# Wastewater Map vs Edison XRef

The clearest difference is update cadence: Wastewater Map at every 3 months against Edison XRef's every 75 months. Wastewater Map also leads on iOS requirement (9.0 vs 11.0). Edison XRef's advantage is device support (3 vs 1). 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.

Wastewater Map ships an update every 3 months, Edison XRef every 75 months. The most recent releases landed on June 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Wastewater Map | Edison XRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wastewater-map/id1455352632/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 75 months |
| Monetization | Free | — |
| Size | 237 MB | 49 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [BELZONA, INC.](https://appshunter.io/developer/1050205709) | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) |

## What reviewers say

### Wastewater Map

[App page](https://appshunter.io/ios/app/wastewater-map/id1455352632)

Explore a sample wastewater plant and learn about its areas and equipment. Discover common problems and potential solutions using advanced polymeric technology. This interactive map helps users understand wastewater plant challenges and how to address them.

**Highlights:** Interactive wastewater plant navigation, Detailed area and equipment descriptions, Identification of typical problems, Presentation of potential solutions, Learning about polymeric technology applications

**Features:** macOS Compatibility

**In-app purchases:** none


### Edison XRef

[App page](https://appshunter.io/ios/app/edison-xref/id1470236203)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wastewater Map free?

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

### Is Edison XRef free?

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

### Do Wastewater Map or Edison XRef have ads?

Neither Wastewater Map nor Edison XRef shows ads.

### Which is updated more often, Wastewater Map or Edison XRef?

Wastewater Map ships an update every 3 months, and Edison XRef every 75 months. Most recently, Wastewater Map was updated on June 11, 2026 and Edison XRef on September 9, 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.*