# Machine Defender vs Aquassist

The clearest difference is update cadence: Aquassist at every 3 weeks against Machine Defender's every 8 months. Machine Defender's advantage is iOS requirement (12.1 vs 15.1). 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.

Machine Defender ships an update every 8 months, Aquassist every 3 weeks. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Machine Defender | Aquassist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/machine-defender/id1496754747/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 274 MB | 64 MB |
| Requires iOS | **12.1** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACOEM Group](https://appshunter.io/developer/1495816959) | [Aquassist Inc.](https://appshunter.io/developer/1789817098) |

## What reviewers say

### Machine Defender

[App page](https://appshunter.io/ios/app/machine-defender/id1496754747)

This app, used with a wireless vibration sensor, collects and analyzes vibration data from industrial rotating machinery. It automatically detects faults in components like motors and pumps, providing diagnostic reports and maintenance recommendations.

**Highlights:** Wireless vibration data collection, Automatic fault detection with AI, Machine health assessment, Maintenance recommendations, Report storage and sharing, Cloud platform connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


### Aquassist

[App page](https://appshunter.io/ios/app/aquassist/id1578564758)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Machine Defender free?

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

### Is Aquassist free?

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

### Do Machine Defender or Aquassist have ads?

Neither Machine Defender nor Aquassist shows ads.

### Which is updated more often, Machine Defender or Aquassist?

Machine Defender ships an update every 8 months, and Aquassist every 3 weeks. Most recently, Machine Defender was updated on October 17, 2026 and Aquassist on October 12, 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.*