# Signal Generator vs 音频助手

The clearest difference is price: 音频助手 at Free against Signal Generator's $0.99. 音频助手 also leads on update cadence (monthly vs every 15 months). Signal Generator's advantage is iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

音频助手 is free to download; Signal Generator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Signal Generator ships an update every 15 months, 音频助手 monthly. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Signal Generator | 音频助手 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/signal-generator-wave/id1309709776/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Monetization | Paid | — |
| Size | 2 MB | 33 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [龙刚 李](https://appshunter.io/developer/1241843884) | [Shenzhen Yuemei Technology Co.,Ltd](https://appshunter.io/developer/1691025722) |

## What reviewers say

### Signal Generator

[App page](https://appshunter.io/ios/app/signal-generator-wave/id1309709776)

Generate high-quality audio signals including sine, square, triangle, sawtooth waves, and white/pink noise. Ideal for testing audio systems, frequency response, and hearing capabilities.

**Highlights:** Sine wave generation, Square wave generation, White noise generation, Pink noise generation, Two-channel phase difference waves, Audio frequency response testing, Hearing test capabilities

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

**In-app purchases:** none


### 音频助手

[App page](https://appshunter.io/ios/app/id6449925007)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Signal Generator free?

Signal Generator costs $0.99, with no in-app purchases.

### Is 音频助手 free?

音频助手 is free to download, with no in-app purchases.

### Do Signal Generator or 音频助手 have ads?

Neither Signal Generator nor 音频助手 shows ads.

### Which is updated more often, Signal Generator or 音频助手?

Signal Generator ships an update every 15 months, and 音频助手 monthly. Most recently, Signal Generator was updated on October 29, 2026 and 音频助手 on October 27, 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.*