# SONO USG vs Angle Meter & Cobb Angle Meter

The clearest difference is price: SONO USG at Free against Angle Meter & Cobb Angle Meter's $9.99. SONO USG also leads on update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

SONO USG is free to download; Angle Meter & Cobb Angle Meter costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SONO USG ships an update every 3 weeks, Angle Meter & Cobb Angle Meter every 4 months. The most recent releases landed on October 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | SONO USG | Angle Meter & Cobb Angle Meter |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 276 MB | 2 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Leltek](https://appshunter.io/developer/1329395835) | [Ahmad Al Hariri](https://appshunter.io/developer/1648019898) |

## What reviewers say

### SONO USG

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Angle Meter & Cobb Angle Meter

[App page](https://appshunter.io/ios/app/angle-meter-and-cobb-angle-meter/id6476834773)

**In-app purchases:** none


## Frequently asked questions

### Is SONO USG free?

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

### Is Angle Meter & Cobb Angle Meter free?

Angle Meter & Cobb Angle Meter costs $9.99, with no in-app purchases.

### Do SONO USG or Angle Meter & Cobb Angle Meter have ads?

Neither SONO USG nor Angle Meter & Cobb Angle Meter shows ads.

### Which is updated more often, SONO USG or Angle Meter & Cobb Angle Meter?

SONO USG ships an update every 3 weeks, and Angle Meter & Cobb Angle Meter every 4 months. Most recently, SONO USG was updated on October 24, 2026 and Angle Meter & Cobb Angle Meter on October 1, 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.*