# Clean Wave° vs ZSTL

The clearest difference is in-app purchases: ZSTL at none against Clean Wave°'s 5. ZSTL also leads on rating (4.7 vs 4.5). Clean Wave°'s advantage is ratings volume (451 vs 3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Clean Wave° sells 5 in-app purchases, starting at $1.99 per 7 days. ZSTL asks for nothing beyond the download.

ZSTL holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Clean Wave° has 451 ratings behind it against 3, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 21, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Clean Wave° | ZSTL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (451 ratings)](https://appshunter.io/ios/app/clean-wave/id6744279441/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/zstl/id6745016964/reviews)** |
| Number of ratings | **451** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Subscription | **Free** |
| Size | 66 MB | 44 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Murat Cetin](https://appshunter.io/developer/1806868353) | [召 李](https://appshunter.io/developer/1740123808) |

## What reviewers say

### Clean Wave°

[App page](https://appshunter.io/ios/app/clean-wave/id6744279441)

This app uses high-frequency sounds to eject water and dust from device speakers, restoring audio clarity and preventing damage. It also checks waterproof certification and performs hardware diagnostics for optimal device performance.

**Highlights:** Water eject using high-frequency sounds, Speaker audio clarity restoration, Dust and debris removal, Waterproof certification checker, Comprehensive hardware diagnostics, Device performance maintenance

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | per 7 days |
| Premium | $2.99 | per 7 days |
| Premium | $3.99 | per 7 days |
| Weekly Subscription | $4.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |


### ZSTL

[App page](https://appshunter.io/ios/app/zstl/id6745016964)

This tool simplifies device access using QR codes and Bluetooth. It offers quick pairing and one-tap unlocking for various smart devices, ensuring a secure and efficient connection experience.

**Highlights:** QR code device recognition, Quick Bluetooth pairing, One-tap unlocking, Supports various smart devices, Secure encrypted connections

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Clean Wave° free?

Clean Wave° is free to download, with in-app purchases available.

### Is ZSTL free?

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

### Which has better reviews, Clean Wave° or ZSTL?

ZSTL is rated higher. Clean Wave° averages 4.5 out of 5 from 451 ratings, while ZSTL averages 4.7 from 3 ratings.

### Do Clean Wave° or ZSTL have ads?

Neither Clean Wave° nor ZSTL shows ads.

### Which is updated more often, Clean Wave° or ZSTL?

Clean Wave° ships an update every 2 months, and ZSTL every 2 months. Most recently, Clean Wave° was updated on September 21, 2026 and ZSTL on June 11, 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.*