# Wind Power Calculator vs Windmill Pro

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.

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.

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.

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.

## The numbers

| Metric | Wind Power Calculator | Windmill Pro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wind-power-calculator/id907350151/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/windmill-pro/id1309388375/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 12 months** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 12 MB |
| Requires iOS | 13 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [DIGISINE ENERGYTECH CO.,LTD.](https://appshunter.io/developer/1541781655) |

## What reviewers say

### Wind Power Calculator

[App page](https://appshunter.io/ios/app/wind-power-calculator/id907350151)

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:** macOS Compatibility

**In-app purchases:** none


### Windmill Pro

[App page](https://appshunter.io/ios/app/windmill-pro/id1309388375)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*