# Sound Surge ~ Speaker Cleaner vs Knowlu

The clearest difference is ads: Sound Surge ~ Speaker Cleaner at none against Knowlu's shown. Sound Surge ~ Speaker Cleaner also leads on iOS requirement (14.0 vs 16.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Sound Surge ~ Speaker Cleaner sells 5 in-app purchases, starting at $3.99 per 7 days and Knowlu sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sound Surge ~ Speaker Cleaner | Knowlu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (156 ratings)](https://appshunter.io/ios/app/sound-surge-speaker-cleaner/id6446887475/reviews)** | — |
| Number of ratings | **156** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | — |
| Monetization | Subscription | — |
| Size | 73 MB | 65 MB |
| Requires iOS | **14.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Selim Ozkaya](https://appshunter.io/developer/1679523754) | [Gehazi Jenda](https://appshunter.io/developer/1855795072) |

## What reviewers say

### Sound Surge ~ Speaker Cleaner

[App page](https://appshunter.io/ios/app/sound-surge-speaker-cleaner/id6446887475)

This app generates wave tones to clear your device's speakers, improving audio quality for music and calls. It also monitors ambient noise and offers an eco-friendly cleaning solution.

**Highlights:** Generate clear wave tones, Clean clogged speakers, Boost speaker performance, Monitor ambient noise, Quick cleaning process, Elevated audio quality

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Sound Surge ~ Water Eject | $5.99 | per 7 days |
| Sound Surge | $19.99 | per year |
| Sound Surge | $34.99 | per year |
| Sound Surge | $49.99 | per year |


### Knowlu

[App page](https://appshunter.io/ios/app/knowlu-study-planner/id6759368620)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knowlu Pro Month | $1.99 | per month |
| Knowlu Pro 3-Months | $4.99 | per 3 months |
| Knowlu Pro Annual | $12.99 | per year |


## Frequently asked questions

### Is Sound Surge ~ Speaker Cleaner free?

Sound Surge ~ Speaker Cleaner is free to download, with in-app purchases available.

### Is Knowlu free?

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

### Do Sound Surge ~ Speaker Cleaner or Knowlu have ads?

Knowlu shows ads; Sound Surge ~ Speaker Cleaner does not.

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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.*