# SONO USG vs HiSono

The clearest difference is iOS requirement: HiSono at 13.0 against SONO USG's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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, HiSono fortnightly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | SONO USG | HiSono |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 276 MB | 189 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Leltek](https://appshunter.io/developer/1329395835) | [Hukui Biotechnology](https://appshunter.io/developer/1591429992) |

## What reviewers say

### SONO USG

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

**Features:** macOS Compatibility

**In-app purchases:** none


### HiSono

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SONO USG free?

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

### Is HiSono free?

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

### Do SONO USG or HiSono have ads?

Neither SONO USG nor HiSono shows ads.

### Which is updated more often, SONO USG or HiSono?

SONO USG ships an update every 3 weeks, and HiSono fortnightly. Most recently, SONO USG was updated on October 24, 2026 and HiSono on October 7, 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.*