# SONO USG vs BladderUSG Pro

SONO USG and BladderUSG Pro 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 4 weeks, BladderUSG Pro monthly. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SONO USG | BladderUSG Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Monthly |
| Size | 276 MB | 17 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Leltek](https://appshunter.io/developer/1329395835) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## What reviewers say

### SONO USG

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

**Features:** macOS Compatibility

**In-app purchases:** none


### BladderUSG Pro

[App page](https://appshunter.io/ios/app/bladderusg-pro/id6450775928)

**In-app purchases:** none


## Frequently asked questions

### Is SONO USG free?

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

### Is BladderUSG Pro free?

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

### Do SONO USG or BladderUSG Pro have ads?

Neither SONO USG nor BladderUSG Pro shows ads.

### Which is updated more often, SONO USG or BladderUSG Pro?

SONO USG ships an update every 4 weeks, and BladderUSG Pro monthly. Most recently, SONO USG was updated on October 9, 2026 and BladderUSG Pro on October 12, 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.*