# Sound vs ENVO

Sound and ENVO are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sound | ENVO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/sound-shield/id6760803417/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 43 MB | 1 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Soter](https://appshunter.io/developer/1886319290) | [Kilian Fix](https://appshunter.io/developer/6774581019) |

## What reviewers say

### Sound

[App page](https://appshunter.io/ios/app/sound-shield/id6760803417)

This application helps you block out distracting noises using basic wired headphones. It's designed to improve focus and productivity without requiring expensive equipment.

**Highlights:** Noise cancellation, Works with wired headphones, Improves focus, Affordable solution

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

**In-app purchases:** none


### ENVO

[App page](https://appshunter.io/ios/app/envo-adaptive-volume/id6789852131)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sound free?

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

### Is ENVO free?

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

### Do Sound or ENVO have ads?

Neither Sound nor ENVO shows ads.

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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.*