# Wastewater Manager vs Membrane Technology Forum

The clearest difference is price: Membrane Technology Forum at Free against Wastewater Manager's $8.99. Wastewater Manager's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 7 months). On in-app purchases and device support there is nothing between them.

Membrane Technology Forum is free to download; Wastewater Manager costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wastewater Manager ships an update every 2 weeks, Membrane Technology Forum every 7 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Wastewater Manager | Membrane Technology Forum |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/wastewater-manager/id598620924/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Monetization | Paid | — |
| Size | 32 MB | 43 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [H3 Apps, LLC](https://appshunter.io/developer/598620927) | [BNP Media](https://appshunter.io/developer/410320322) |

## What reviewers say

### Wastewater Manager

[App page](https://appshunter.io/ios/app/wastewater-manager/id598620924)

This app provides over 75 essential formulas for wastewater operators and engineers. It simplifies daily lab work and troubleshooting by organizing calculations by process type. Answers can be easily emailed for sharing.

**Highlights:** Over 75 wastewater formulas, Organized by process type, English measurements only, Email answers, Troubleshooting assistance

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

**In-app purchases:** none


### Membrane Technology Forum

[App page](https://appshunter.io/ios/app/membrane-technology-forum/id6743992751)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wastewater Manager free?

Wastewater Manager costs $8.99, with no in-app purchases.

### Is Membrane Technology Forum free?

Membrane Technology Forum is free to download, with no in-app purchases.

### Do Wastewater Manager or Membrane Technology Forum have ads?

Membrane Technology Forum shows ads; Wastewater Manager does not.

### Which is updated more often, Wastewater Manager or Membrane Technology Forum?

Wastewater Manager ships an update every 2 weeks, and Membrane Technology Forum every 7 months. Most recently, Wastewater Manager was updated on October 23, 2026 and Membrane Technology Forum on October 29, 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.*