# RRTool vs BladderUSG Pro

The clearest difference is update cadence: BladderUSG Pro at monthly against RRTool's every 4 months. 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.

RRTool ships an update every 4 months, BladderUSG Pro monthly. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | RRTool | BladderUSG Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Size | 5 MB | 17 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bay Area Instruments Inc.](https://appshunter.io/developer/1649065401) | [SonoStarMed](https://appshunter.io/developer/1113993886) |

## What reviewers say

### RRTool

[App page](https://appshunter.io/ios/app/rrtool/id6443753484)

**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 RRTool free?

RRTool 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 RRTool or BladderUSG Pro have ads?

Neither RRTool nor BladderUSG Pro shows ads.

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

RRTool ships an update every 4 months, and BladderUSG Pro monthly. Most recently, RRTool was updated on October 3, 2026 and BladderUSG Pro on September 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*