# SONO USG vs DW Sono

SONO USG and DW Sono 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.

SONO USG ships an update every 3 weeks, DW Sono fortnightly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SONO USG | DW Sono |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 276 MB | 367 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Leltek](https://appshunter.io/developer/1329395835) | [Dawei Medical (Jiangsu) Co.,Ltd](https://appshunter.io/developer/1675463297) |

## What reviewers say

### SONO USG

[App page](https://appshunter.io/ios/app/sono-usg/id1671961635)

**Features:** macOS Compatibility

**In-app purchases:** none


### DW Sono

[App page](https://appshunter.io/ios/app/dw-sono/id6755143319)

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

**In-app purchases:** none


## Frequently asked questions

### Is SONO USG free?

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

### Is DW Sono free?

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

### Do SONO USG or DW Sono have ads?

Neither SONO USG nor DW Sono shows ads.

### Which is updated more often, SONO USG or DW Sono?

SONO USG ships an update every 3 weeks, and DW Sono fortnightly. Most recently, SONO USG was updated on November 7, 2026 and DW Sono on October 30, 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.*