# ECOUNI vs NAU S

The clearest difference is update cadence: ECOUNI at every 3 weeks against NAU S's every 6 weeks. ECOUNI also leads on iOS requirement (12.0 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.

ECOUNI ships an update every 3 weeks, NAU S every 6 weeks. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | ECOUNI | NAU S |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 152 MB | 61 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Onschool](https://appshunter.io/developer/1557400316) | [AISoft](https://appshunter.io/developer/1534825275) |

## What reviewers say

### ECOUNI

[App page](https://appshunter.io/ios/app/ecouni/id6504415495)

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

**In-app purchases:** none


### NAU S

[App page](https://appshunter.io/ios/app/nau-s-link/id6780808321)

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

**In-app purchases:** none


## Frequently asked questions

### Is ECOUNI free?

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

### Is NAU S free?

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

### Do ECOUNI or NAU S have ads?

Neither ECOUNI nor NAU S shows ads.

### Which is updated more often, ECOUNI or NAU S?

ECOUNI ships an update every 3 weeks, and NAU S every 6 weeks. Most recently, ECOUNI was updated on October 14, 2026 and NAU S on September 30, 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.*