RRTool vs BladderUSG Pro
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
RRTool
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RRTool is the extended features companion app to your RR1090 digital refractometer and similar Bay Area Instruments devices. It communicates via encrypted BLE with your device, mirroring its buttons and providing extended functionalities such as: cloud spreadsheet logging of your measurements, enabling of ATC for Brix, QR code generation and device firmware upgrades.
BladderUSG Pro
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*Medical Disclaimer This Appβs imaging features are available and intended for diagnostic or procedure guidance purposes only when certified medical professionals use Bladderscanner transducers (Medical Device). This App only displays or manages ultrasound imaging or Doppler signals, and Image interpreting and specific diagnosis shall be left to qualified medical professionals. The imaging or Doppler signals displayed are only for certified medical professionals, not meant to provide medical advice or diaγOur bladder analyzer has obtained medical license in China and FDA certification in the United States.Registration Certificate No.: Yue Xi Zhu Zhun 20160261592 US FDA Certificate K172750 Jurisdiction Statement: This application is intended for use in China and the United States. We control and operate this APP in the China ("China") and the United States; Unless otherwise specified, the materials displayed on this app are only for the purpose of promoting products and services within China and the United States. We have not made any statements regarding the applicability or suitability of any materials on this APP in any other region. If you choose to access this app from another location, it is your responsibility to comply with applicable local laws.
Screenshots
Verdict
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.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
| Parameter | RRTool | BladderUSG Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Monthly β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 5 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Bay Area Instruments Inc. | SonoStarMed |
In-app purchases
RRTool
No in-app purchases
BladderUSG Pro
No in-app purchases









