# HBS20 vs SmartUSG

The clearest difference is iOS requirement: HBS20 at 13.0 against SmartUSG'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.

HBS20 ships an update every 2 months, SmartUSG monthly. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | HBS20 | SmartUSG |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 26 MB | 137 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mianyang Meike Electronic Equipment Co., Ltd](https://appshunter.io/developer/1821159669) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## What reviewers say

### HBS20

[App page](https://appshunter.io/ios/app/hbs20-bladder-tracker/id6747381992)

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartUSG

[App page](https://appshunter.io/ios/app/smartusg/id6755596804)

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

**In-app purchases:** none


## Frequently asked questions

### Is HBS20 free?

HBS20 is free to download, with no in-app purchases.

### Is SmartUSG free?

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

### Do HBS20 or SmartUSG have ads?

Neither HBS20 nor SmartUSG shows ads.

### Which is updated more often, HBS20 or SmartUSG?

HBS20 ships an update every 2 months, and SmartUSG monthly. Most recently, HBS20 was updated on October 7, 2026 and SmartUSG 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.*