Windmill Pro vs Sound Meter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Windmill Pro
Monitor your Automaxx Windmill wind turbines directly from your smartphone. Track operational data and status via Bluetooth, including voltage, charge levels, and generation metrics.
- Monitor wind turbine operation
- Track functional data
- View operating status
- Bluetooth connectivity
- Generating Voltage
- Battery Charge Level Indicator
- Brake/Unbrake control
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The Windmill Pro App allows you to monitor the operation of your Automaxx Windmill wind turbines. You can keep track of the functional data and operating status of the wind turbine from your smartphone via Bluetooth. Feature: * Basic - Generating Voltage - Battery Charge Level Indicator - Brake or Unbrake * Advance - Generating Voltage - Generating Ampere - Generating Wattage - Generating Wattage Lifetime
Sound Meter
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Sound Meter - Noise Meter dB helps you measure ambient sound levels using the built-in microphone. Use it to check everyday noise at home, in the office, on the street, in a classroom, studio, or any other environment. The app shows sound levels in decibels and helps you better understand how loud your surroundings are. Features: • Real-time sound level measurement • Clear decibel display • Simple, focused interface • Useful for quick noise checks • Works directly on your device Please note: built-in microphones are not a replacement for professional calibrated sound level meters. Measurements may vary depending on device model, microphone condition, case, and environment. For legal, medical, workplace safety, or engineering purposes, use certified professional equipment. The app metadata has been updated to include the Terms of Use (EULA) link in the App Description. Inside the app, the Privacy Policy and Terms of Use links are available on the subscription/paywall screen. Privacy Policy: https://sergeykushner.github.io/app-privacy.html?id=sound-meter Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Windmill Pro at none against Sound Meter's 3. Windmill Pro also leads on device support (3 vs 1) and iOS requirement (9.3 vs 26.0). Sound Meter's advantage is update cadence (fortnightly vs every 12 months). On price and ads 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. Sound Meter sells 3 in-app purchases, starting at $0.99 per month. Windmill Pro asks for nothing beyond the download.
Windmill Pro ships an update every 12 months, Sound Meter fortnightly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | Windmill Pro | Sound Meter |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 12 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.3 — better | 26.0 |
| Further details — not scored | ||
| Size | 12 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | DIGISINE ENERGYTECH CO.,LTD. | Sergey Kushner |
In-app purchases
Windmill Pro
No in-app purchases
Sound Meter
- Month$0.991 Month
- Year$2.991 Year
- Lifetime$4.99
Questions
Is Windmill Pro free?
Is Sound Meter free?
Do Windmill Pro or Sound Meter have ads?
Which is updated more often, Windmill Pro or Sound Meter?
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