# Aco Apache App vs echOpen ON

The clearest difference is update cadence: Aco Apache App at monthly against echOpen ON's every 4 months. Aco Apache App also leads on iOS requirement (14.0 vs 17.0). 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.

Aco Apache App ships an update monthly, echOpen ON every 4 months. The most recent releases landed on September 10, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Aco Apache App | echOpen ON |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/aco-apache-app/id1530361444/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 379 MB | 67 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Aco Healthcare Co., Ltd.](https://appshunter.io/developer/1505964749) | [echopen factory](https://appshunter.io/developer/1530808488) |

## What reviewers say

### Aco Apache App

[App page](https://appshunter.io/ios/app/aco-apache-app/id1530361444)

This medical application provides physicians with high-quality, real-time ultrasound imaging to enhance patient care. It features various imaging modes and an intuitive interface for improved portability and efficiency in clinical workflows.

**Highlights:** High imaging quality, Real-time ultrasound, B Mode, Color Doppler, Pulsed Wave, Motion mode, Easy user interface

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

**In-app purchases:** none


### echOpen ON

[App page](https://appshunter.io/ios/app/echopen-on/id1664469384)

**In-app purchases:** none


## Frequently asked questions

### Is Aco Apache App free?

Aco Apache App is free to download, with no in-app purchases.

### Is echOpen ON free?

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

### Do Aco Apache App or echOpen ON have ads?

Neither Aco Apache App nor echOpen ON shows ads.

### Which is updated more often, Aco Apache App or echOpen ON?

Aco Apache App ships an update monthly, and echOpen ON every 4 months. Most recently, Aco Apache App was updated on September 10, 2026 and echOpen ON on September 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.*