# Tuner vs 九拍教师

The clearest difference is iOS requirement: Tuner at 9.0 against 九拍教师's 15.0. 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.

Tuner ships an update every 4 weeks, 九拍教师 fortnightly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Tuner | 九拍教师 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 4 MB | 170 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dongguan SNOW Mechanical & Electrical Technology Co., Ltd.](https://appshunter.io/developer/1327760084) | [天津九拍教育科技有限公司](https://appshunter.io/developer/1071514060) |

## What reviewers say

### Tuner

[App page](https://appshunter.io/ios/app/tuner/id1327760085)

This tool allows for the precise adjustment of car audio DSP amplifiers. It provides control over volume, EQ, delay, crossover, phase, and other functions to customize sound effects for each amplifier.

**Highlights:** Volume control, EQ adjustment, Delay settings, Crossover management, Phase control, Custom sound effects

**Features:** macOS Compatibility

**In-app purchases:** none


### 九拍教师

[App page](https://appshunter.io/ios/app/id1473901938)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tuner free?

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

### Is 九拍教师 free?

九拍教师 is free to download, with no in-app purchases.

### Do Tuner or 九拍教师 have ads?

Neither Tuner nor 九拍教师 shows ads.

### Which is updated more often, Tuner or 九拍教师?

Tuner ships an update every 4 weeks, and 九拍教师 fortnightly. Most recently, Tuner was updated on October 24, 2026 and 九拍教师 on October 14, 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.*