Comparison

Wind Power Calculator vs Windmill Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Wind Power Calculator

Estimate the power output of a windmill using key factors like air density, windmill efficiency, cross-sectional area, and wind velocity. Understand how wind speed significantly impacts energy generation and calculate year-round energy production for informed decisions.

Highlights
  • Estimate available wind power
  • Calculate power based on key factors
  • Understand wind velocity impact
  • Calculate year-round energy generation
  • Unlock wind energy potential
Features
Read full description

Wind Power Calculator helps estimate the available power generated by a windmill based on several key factors. The formula for available power in the wind is expressed as: Pa = 1/2 ξ ρ A v^3 Where: P = power (W) ρ = air density (kg/m^3) ξ = windmill efficiency (typically below 0.4 or 40%) A = cross-sectional area perpendicular to the wind (m^2) v = wind velocity (m/s) Keep in mind that air density decreases with temperature and altitude, but the most significant factor in power generation is wind velocity. A mere 20% increase in wind velocity can boost power generation by a remarkable 73%. The energy produced by a windmill depends on the power generation, as outlined above, and the frequency of wind speeds at the specific location—referred to as the 'wind speed frequency distribution.' To calculate the total energy generated over a year, you need to sum the power generation for all wind velocities (from the windmill's cut-in speed to its shut-down speed) and multiply it by the hours the wind blows at those speeds. Maximize your wind energy potential and gain insights into year-round energy generation. With Wind Power Calculator, you can unlock the true potential of wind power and make informed decisions for a sustainable future. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

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.

Highlights
  • Monitor wind turbine operation
  • Track functional data
  • View operating status
  • Bluetooth connectivity
  • Generating Voltage
  • Battery Charge Level Indicator
  • Brake/Unbrake control
Read full description

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

Screenshots

Wind Power Calculator4 screens
Windmill Pro2 screens

Verdict

The call

The clearest difference is price: Windmill Pro at Free against Wind Power Calculator's $2.99. Windmill Pro also leads on update cadence (every 12 months vs every 29 months) and iOS requirement (9.3 vs 13). Wind Power Calculator's advantage is rating (5.0 vs 1.0). On ratings volume, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Windmill Pro is free to download; Wind Power Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Wind Power Calculator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Wind Power Calculator ships an update every 29 months, Windmill Pro every 12 months. The most recent releases landed on September 15, 2026 and June 9, 2026 respectively.

Scorecard5 real differences · 5 level
Wind Power Calculator versus Windmill Pro: the parameters behind the verdict, then further details
ParameterWind Power CalculatorWindmill Pro
Price$2.99Free — better
Rating5.0 (1 ratings) — better1.0 (2 ratings)
Positive reviews—0.0% of reviews
Number of ratings12 — better
Update frequencyEvery 29 monthsEvery 12 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS139.3 — better
Further details — not scored
Size1 MB12 MB
Age rating4+4+
DeveloperNitrioDIGISINE ENERGYTECH CO.,LTD.

Customer experience

Wind Power Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Windmill Pro

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Wind Power Calculator

No in-app purchases

None

Windmill Pro

No in-app purchases

Questions

Is Wind Power Calculator free?
Wind Power Calculator costs $2.99, with no in-app purchases.
Is Windmill Pro free?
Windmill Pro is free to download, with no in-app purchases.
Which has better reviews, Wind Power Calculator or Windmill Pro?
Wind Power Calculator is rated higher. Wind Power Calculator averages 5.0 out of 5 from 1 ratings, while Windmill Pro averages 1.0 from 2 ratings.
Do Wind Power Calculator or Windmill Pro have ads?
Neither Wind Power Calculator nor Windmill Pro shows ads.
Which is updated more often, Wind Power Calculator or Windmill Pro?
Wind Power Calculator ships an update every 29 months, and Windmill Pro every 12 months. Most recently, Wind Power Calculator was updated on September 15, 2026 and Windmill Pro on June 9, 2026.

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