# ecoUnit vs Ei Electronics AudioLINK US

The clearest difference is update cadence: Ei Electronics AudioLINK US at every 3 months against ecoUnit's every 16 months. Ei Electronics AudioLINK US also leads on iOS requirement (10.0 vs 14.0). 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.

ecoUnit ships an update every 16 months, Ei Electronics AudioLINK US every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ecoUnit | Ei Electronics AudioLINK US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ei-electronics-audiolink-us/id1219360389/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 15 MB | 28 MB |
| Requires iOS | 14.0 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fr. Sauter AG](https://appshunter.io/developer/586916485) | [The Ei Company](https://appshunter.io/developer/989857603) |

## What reviewers say

### ecoUnit

[App page](https://appshunter.io/ios/app/ecounit-touch-mobile/id1063750470)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ei Electronics AudioLINK US

[App page](https://appshunter.io/ios/app/ei-electronics-audiolink-us/id1219360389)

Access real-time data from alarms acoustically via your iPhone. Monitor battery status, alarm events, sensor status, and more. Generate comprehensive reports for properties and receive on-screen instructions for data extraction.

**Highlights:** Acoustic data extraction, Real-time alarm status, Battery and event monitoring, Barcode serial number scanning, Grouped property reports, PDF/CSV report export, On-screen download instructions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ecoUnit free?

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

### Is Ei Electronics AudioLINK US free?

Ei Electronics AudioLINK US is free to download, with no in-app purchases.

### Do ecoUnit or Ei Electronics AudioLINK US have ads?

Neither ecoUnit nor Ei Electronics AudioLINK US shows ads.

### Which is updated more often, ecoUnit or Ei Electronics AudioLINK US?

ecoUnit ships an update every 16 months, and Ei Electronics AudioLINK US every 3 months. Most recently, ecoUnit was updated on October 26, 2026 and Ei Electronics AudioLINK US on October 24, 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.*