# Sonic Eject vs 来宠上门喂养服务

The clearest difference is in-app purchases: 来宠上门喂养服务 at none against Sonic Eject's 2. Sonic Eject's advantage is ads (none vs shown) and update cadence (every 3 days vs weekly). On price and device support there is nothing between them.

Both are free to download. Sonic Eject sells 2 in-app purchases, starting at $8.99 per year. 来宠上门喂养服务 asks for nothing beyond the download.

Sonic Eject ships an update every 3 days, 来宠上门喂养服务 weekly. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Sonic Eject | 来宠上门喂养服务 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (17 ratings)](https://appshunter.io/ios/app/sonic-eject/id1625256246/reviews)** | — |
| Number of ratings | **17** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 118 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [祥 徐](https://appshunter.io/developer/1608583299) | [深圳艾宠科技有限公司](https://appshunter.io/developer/1731935307) |

## What reviewers say

### Sonic Eject

[App page](https://appshunter.io/ios/app/sonic-eject/id1625256246)

This app acts as a frequency generator and headphone burner. It utilizes various audio frequencies, white noise, and pink noise to help new headphones reach a stable state and improve sound quality. Features include manual frequency adjustment and automatic full-band modes.

**Highlights:** Frequency generator, Automatic full-band mode, Manual Hertz adjustment, White noise generation, Pink noise generation, Headphone burn-in

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sonic pro a year | $8.99 | per year |
| sonic pro a year discount | $8.99 | per year |


### 来宠上门喂养服务

[App page](https://appshunter.io/ios/app/id6478137108)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonic Eject free?

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

### Is 来宠上门喂养服务 free?

来宠上门喂养服务 is free to download, with no in-app purchases.

### Do Sonic Eject or 来宠上门喂养服务 have ads?

来宠上门喂养服务 shows ads; Sonic Eject does not.

### Which is updated more often, Sonic Eject or 来宠上门喂养服务?

Sonic Eject ships an update every 3 days, and 来宠上门喂养服务 weekly. Most recently, Sonic Eject was updated on September 28, 2026 and 来宠上门喂养服务 on October 5, 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.*