# Mandolin Tuner vs 调音器Cat

The clearest difference is ads: 调音器Cat at none against Mandolin Tuner's shown. Mandolin Tuner's advantage is update cadence (monthly vs every 2 months) and iOS requirement (12.0 vs 16.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Mandolin Tuner sells 2 in-app purchases, starting at $2.99 per 7 days and 调音器Cat sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Mandolin Tuner ships an update monthly, 调音器Cat every 2 months. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mandolin Tuner | 调音器Cat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Size | 52 MB | 33 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NETIGEN Kluzowicz sp. j.](https://appshunter.io/developer/892331873) | [Wuhan Net Power Technology Co., Ltd](https://appshunter.io/developer/1334612744) |

## What reviewers say

### Mandolin Tuner

[App page](https://appshunter.io/ios/app/mandolin-tuner-xtuner-pro/id6744967958)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week subscription + trial | $2.99 | per 7 days |
| Forever one-time payment | $19.99 | one-time |


### 调音器Cat

[App page](https://appshunter.io/ios/app/cat/id6759902960)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | one-time |
| 年度会员 | $3.99 | one-time |
| 两年会员 | $5.99 | one-time |
| 永久会员 | $5.99 | one-time |


## Frequently asked questions

### Is Mandolin Tuner free?

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

### Is 调音器Cat free?

调音器Cat is free to download, with in-app purchases available.

### Do Mandolin Tuner or 调音器Cat have ads?

Mandolin Tuner shows ads; 调音器Cat does not.

### Which is updated more often, Mandolin Tuner or 调音器Cat?

Mandolin Tuner ships an update monthly, and 调音器Cat every 2 months. Most recently, Mandolin Tuner was updated on October 5, 2026 and 调音器Cat on October 24, 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.*