# UMSmartSound vs Private

UMSmartSound and Private are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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.

UMSmartSound ships an update every 3 months, Private every 2 months. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | UMSmartSound | Private |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 11 MB | 42 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZERO PLUS, K.K.](https://appshunter.io/developer/1536723252) | [军义 黄](https://appshunter.io/developer/1755429745) |

## What reviewers say

### UMSmartSound

[App page](https://appshunter.io/ios/app/umsmartsound/id1658261071)

**Features:** macOS Compatibility

**In-app purchases:** none


### Private

[App page](https://appshunter.io/ios/app/private-x/id6742808276)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UMSmartSound free?

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

### Is Private free?

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

### Do UMSmartSound or Private have ads?

Neither UMSmartSound nor Private shows ads.

### Which is updated more often, UMSmartSound or Private?

UMSmartSound ships an update every 3 months, and Private every 2 months. Most recently, UMSmartSound was updated on October 27, 2026 and Private on October 28, 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.*