# ONWASA vs MT PMCS

The clearest difference is update cadence: MT PMCS at every 2 days against ONWASA's every 5 months. ONWASA's advantage is iOS requirement (16.0 vs 18.5). 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.

ONWASA ships an update every 5 months, MT PMCS every 2 days. The most recent releases landed on September 15, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | ONWASA | MT PMCS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Size | 16 MB | 75 MB |
| Requires iOS | **16.0** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Onslow Water and Sewer Authority](https://appshunter.io/developer/1607792207) | [BRIAN MICHAEL PELSH](https://appshunter.io/developer/6805416052) |

## What reviewers say

### ONWASA

[App page](https://appshunter.io/ios/app/onwasa/id1607792205)

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

**In-app purchases:** none


### MT PMCS

[App page](https://appshunter.io/ios/app/mt-pmcs/id6805610893)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ONWASA free?

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

### Is MT PMCS free?

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

### Do ONWASA or MT PMCS have ads?

Neither ONWASA nor MT PMCS shows ads.

### Which is updated more often, ONWASA or MT PMCS?

ONWASA ships an update every 5 months, and MT PMCS every 2 days. Most recently, ONWASA was updated on September 15, 2026 and MT PMCS on September 20, 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.*