WirelessUSG Flash vs Cold Knee Massager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WirelessUSG Flash
This application displays ultrasound images for reference. It is important to note that it does not provide medical advice and users should consult a physician for diagnosis or treatment.
- Ultrasound image display
- Reference imaging
- Disclaimer for medical use
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Cutting edge ultrasound system. Disclaimer: WirelessUSG just provides ultrasound image as a reference, it does not constitute medical advice. You should consult a physician regarding medical diagnosis or treatment.
Cold Knee Massager
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This app is designed to work seamlessly with the smart leg cold/heat therapy device, giving you full control right from your phone. Connect via Bluetooth and you can: Start / stop the therapy with a single tap Switch between cooling and heating modes Check the device battery level in real time With a simple and intuitive interface, you can enjoy comfortable cold or heat therapy anytime — perfect for post‑sports recovery, muscle relaxation, or daily soothing. Note: Requires the dedicated leg cold/heat therapy device hardware.
Screenshots
Verdict
The clearest difference is iOS requirement: Cold Knee Massager at 13.0 against WirelessUSG Flash's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
WirelessUSG Flash ships an update monthly, Cold Knee Massager every 3 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | WirelessUSG Flash | Cold Knee Massager |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (12 ratings) — better | — |
| Positive reviews | 14.3% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 33 MB |
| Age rating | 12+ | 4+ |
| Developer | SonoStarMed | 海洋 刘 |
In-app purchases
WirelessUSG Flash
No in-app purchases
Cold Knee Massager
No in-app purchases
Questions
Is WirelessUSG Flash free?
Is Cold Knee Massager free?
Do WirelessUSG Flash or Cold Knee Massager have ads?
Which is updated more often, WirelessUSG Flash or Cold Knee Massager?
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