# 民达OA vs Echo

The clearest difference is in-app purchases: 民达OA at none against Echo's 11. 民达OA also leads on iOS requirement (12.0 vs 26.0). Echo's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Echo sells 11 in-app purchases, starting at $3.99 per 7 days. 民达OA asks for nothing beyond the download.

民达OA ships an update every 2 weeks, Echo every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 民达OA | Echo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/echo-k-pop-live-translate/id6783508375/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 58 MB | 27 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hunan Minda Pharmaceutical Co., Ltd.](https://appshunter.io/developer/1535162701) | [Hau-Ben Shih](https://appshunter.io/developer/1350599516) |

## What reviewers say

### 民达OA

[App page](https://appshunter.io/ios/app/oa/id1635309469)

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

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-k-pop-live-translate/id6783508375)

This app provides real-time translations for videos and apps, displaying captions in a floating window. It supports various platforms and offers both live audio and on-screen text translation, with options to save and share translated moments.

**Highlights:** Live translated captions over any video or app, Floating Picture-in-Picture window, Automatic language detection, On-screen text and live audio translation, Save and share translated sessions, On-device translation for speed and offline use

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Echo Plus — 每周 | $3.99 | per 7 days |
| Echo Plus Weekly · 8 h | $3.99 | per 7 days |
| Echo Unlimited | $5.99 | per month |
| Echo Plus Monthly · 20 h | $12.99 | per month |
| Echo Plus Yearly · 20 h/month | $99.99 | per year |
| Echo Plus — Yearly | $109.99 | per year |
| Echo Plus Yearly · 20 h/month | $149.99 | per year |
| 一日通行证 | $1.99 | one-time |
| +2 hours | $1.99 | one-time |
| +5 hours | $3.99 | one-time |
| +12 hours | $7.99 | one-time |


## Frequently asked questions

### Is 民达OA free?

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

### Is Echo free?

Echo is free to download, with in-app purchases available.

### Do 民达OA or Echo have ads?

Neither 民达OA nor Echo shows ads.

### Which is updated more often, 民达OA or Echo?

民达OA ships an update every 2 weeks, and Echo every 3 days. Most recently, 民达OA was updated on October 30, 2026 and Echo on October 31, 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.*