# COMPASSMOBILE Flushing vs ZetaSurvey

The clearest difference is iOS requirement: COMPASSMOBILE Flushing at 16.0 against ZetaSurvey's 18.0. On price, update cadence, 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.

COMPASSMOBILE Flushing ships an update every 2 months, ZetaSurvey every 3 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | COMPASSMOBILE Flushing | ZetaSurvey |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 30 MB | 162 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hydrop Environmental Consultancy Services](https://appshunter.io/developer/1124513097) | [ZetaSafe Limited](https://appshunter.io/developer/702791559) |

## What reviewers say

### COMPASSMOBILE Flushing

[App page](https://appshunter.io/ios/app/compassmobile-flushing/id1300233642)

This app enables users to record and submit data related to water asset evaluation and flushing activities. It works alongside a companion system to manage information about water infrastructure.

**Highlights:** Record water asset evaluation, Submit flushing information, Manage water asset data, Companion system integration

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

**In-app purchases:** none


### ZetaSurvey

[App page](https://appshunter.io/ios/app/zetasurvey/id1434041905)

**In-app purchases:** none


## Frequently asked questions

### Is COMPASSMOBILE Flushing free?

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

### Is ZetaSurvey free?

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

### Do COMPASSMOBILE Flushing or ZetaSurvey have ads?

Neither COMPASSMOBILE Flushing nor ZetaSurvey shows ads.

### Which is updated more often, COMPASSMOBILE Flushing or ZetaSurvey?

COMPASSMOBILE Flushing ships an update every 2 months, and ZetaSurvey every 3 months. Most recently, COMPASSMOBILE Flushing was updated on November 6, 2026 and ZetaSurvey on November 2, 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.*