# HiSono vs BladderUSG Pro

The clearest difference is update cadence: HiSono at fortnightly against BladderUSG Pro's monthly. On price, ads, in-app purchases and device support there is nothing between them.

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

HiSono ships an update fortnightly, BladderUSG Pro monthly. The most recent releases landed on September 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | HiSono | BladderUSG Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 189 MB | 47 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Hukui Biotechnology](https://appshunter.io/developer/1591429992) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## What reviewers say

### HiSono

[App page](https://appshunter.io/ios/app/hisono/id6449582837)

**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 HiSono free?

HiSono 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 HiSono or BladderUSG Pro have ads?

Neither HiSono nor BladderUSG Pro shows ads.

### Which is updated more often, HiSono or BladderUSG Pro?

HiSono ships an update fortnightly, and BladderUSG Pro monthly. Most recently, HiSono was updated on September 5, 2026 and BladderUSG Pro on September 9, 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.*