# TessWebApp vs WindPower

The clearest difference is in-app purchases: TessWebApp at none against WindPower's 1. TessWebApp also leads on update cadence (weekly vs every 5 months) and iOS requirement (10.0 vs 18). On price, ads and device support there is nothing between them.

Both are free to download. WindPower sells 1 in-app purchase, starting at $2.99 per month. TessWebApp asks for nothing beyond the download.

TessWebApp ships an update weekly, WindPower every 5 months. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | TessWebApp | WindPower |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | — | Subscription |
| Size | 75 MB | 118 MB |
| Requires iOS | **10.0** | 18 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [LUBRICATION MANAGEMENT SL](https://appshunter.io/developer/1477028459) | [rainbow-learning-software](https://appshunter.io/developer/1784094642) |

## What reviewers say

### TessWebApp

[App page](https://appshunter.io/ios/app/tesswebapp/id1477028460)

**Features:** macOS Compatibility

**In-app purchases:** none


### WindPower

[App page](https://appshunter.io/ios/app/windpower-app/id6739182378)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $2.99 | per month |


## Frequently asked questions

### Is TessWebApp free?

TessWebApp is free to download, with no in-app purchases.

### Is WindPower free?

WindPower is free to download, with in-app purchases available.

### Do TessWebApp or WindPower have ads?

Neither TessWebApp nor WindPower shows ads.

### Which is updated more often, TessWebApp or WindPower?

TessWebApp ships an update weekly, and WindPower every 5 months. Most recently, TessWebApp was updated on October 7, 2026 and WindPower on September 25, 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.*