Comparison

Wind Power Calculator vs WindPower

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

WindPower

This app provides technicians and professionals in the wind energy sector with direct oversight of wind turbines in Germany. It offers tools for searching turbines, detailed weather forecasts, documentation, and safety checks to simplify daily work.

Highlights
  • Search 37,000+ wind turbines
  • 14-day weather forecast per turbine
  • Favorites and search history
  • Photo documentation and safety checks
  • Last Minute Risk Analyses (LMRA)
  • Nm converter
  • Nearby points of interest
Read full description

With WindPower, you have direct oversight of 37,000 wind turbines across Germany – in an app specifically developed for technicians and professionals in the wind energy sector to make daily work simpler and more efficient. The subscription starts with a free trial month and then becomes a paid subscription. **Easy Wind Turbine Search** Find virtually any wind turbine quickly and precisely by name or keywords and get a comprehensive preview on the map. Information such as manufacturer, type, commissioning date, location, hub height, rotor diameter, rated power, and current weather data are displayed – all without registration and completely anonymously. **14-Day Weather Forecast** Plan your deployment with a detailed 14-day weather forecast, specifically tailored for each wind turbine in Germany. This way, you always keep an eye on the weather conditions at the deployment site on a weekly, daily, and hourly basis. **Favorites & Search History** Save preferred wind turbines as favorites and quickly access the search history to access important locations at any time. **Photo Documentation & Safety Checks** Document maintenance work with the convenient photo feature and perform Last Minute Risk Analyses (LMRA). Create PDF documentations directly in the app and ensure comprehensive safety. **Other Useful Features:** - **Nm Converter:** Accurately calculate the necessary torque. - **Interesting Places Nearby:** Find nearby hotels, gas stations, and other facilities for your team. Using this app requires an active subscription. The subscription starts with a free trial month and then becomes a paid subscription. The current price is displayed directly in the app. WindPower – your reliable everyday assistant in wind energy. Download now and experience how straightforward and efficient your work can be!

Screenshots

Wind Power Calculator4 screens
WindPower4 screens

Verdict

The call

The clearest difference is price: WindPower at Free against Wind Power Calculator's $2.99. WindPower also leads on update cadence (every 4 months vs every 29 months). Wind Power Calculator's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 18). On ads 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

WindPower is free to download; Wind Power Calculator costs $2.99 up front. WindPower sells 1 in-app purchase, starting at $2.99 per month. Wind Power Calculator asks for nothing beyond the download.

UpkeepUpdate frequency

Wind Power Calculator ships an update every 29 months, WindPower every 4 months. The most recent releases landed on September 15, 2026 and June 8, 2026 respectively.

Scorecard5 real differences · 5 level
Wind Power Calculator versus WindPower: the parameters behind the verdict, then further details
ParameterWind Power CalculatorWindPower
Price$2.99Free — better
Rating5.0 (1 ratings) — better
Positive reviews50.0% of reviews
Number of ratings1 — better
Update frequencyEvery 29 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better18
Further details — not scored
Size1 MB8 MB
Age rating4+17+
DeveloperNitrioChristian Schlee

Customer experience

Wind Power Calculator

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

WindPower

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Wind Power Calculator

No in-app purchases

1 purchases

WindPower

Subscriptions1
  • Full access1 Month trial$2.991 Month

Questions

Is Wind Power Calculator free?
Wind Power Calculator costs $2.99, with no in-app purchases.
Is WindPower free?
WindPower is free to download, with in-app purchases available.
Do Wind Power Calculator or WindPower have ads?
Neither Wind Power Calculator nor WindPower shows ads.
Which is updated more often, Wind Power Calculator or WindPower?
Wind Power Calculator ships an update every 29 months, and WindPower every 4 months. Most recently, Wind Power Calculator was updated on September 15, 2026 and WindPower on June 8, 2026.

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