# HI MPF vs Echo回声练习

The clearest difference is iOS requirement: Echo回声练习 at 13.0 against HI MPF's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HI MPF ships an update every 6 weeks, Echo回声练习 every 3 weeks. The most recent releases landed on September 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | HI MPF | Echo回声练习 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 50 MB | 118 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [宁波港信息通信有限公司](https://appshunter.io/developer/1480180135) | [锐华 甘](https://appshunter.io/developer/6787809326) |

## What reviewers say

### HI MPF

[App page](https://appshunter.io/ios/app/hi-mpf/id6756637737)

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

**In-app purchases:** none


### Echo回声练习

[App page](https://appshunter.io/ios/app/echo/id6787870760)

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

**In-app purchases:** none


## Frequently asked questions

### Is HI MPF free?

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

### Is Echo回声练习 free?

Echo回声练习 is free to download, with no in-app purchases.

### Do HI MPF or Echo回声练习 have ads?

Neither HI MPF nor Echo回声练习 shows ads.

### Which is updated more often, HI MPF or Echo回声练习?

HI MPF ships an update every 6 weeks, and Echo回声练习 every 3 weeks. Most recently, HI MPF was updated on September 23, 2026 and Echo回声练习 on October 10, 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.*