# VBus®Touch Trainer vs WindPower

The clearest difference is iOS requirement: VBus®Touch Trainer at 14.0 against WindPower's 18. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. VBus®Touch Trainer sells 12 one-off in-app purchases and WindPower sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

VBus®Touch Trainer ships an update every 7 months, WindPower every 5 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | VBus®Touch Trainer | WindPower |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Monetization | — | Subscription |
| Size | 40 MB | 118 MB |
| Requires iOS | **14.0** | 18 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [RESOL GmbH](https://appshunter.io/developer/369420321) | [Christian Schlee](https://appshunter.io/developer/1784094642) |

## What reviewers say

### VBus®Touch Trainer

[App page](https://appshunter.io/ios/app/vbustouch-trainer/id930456293)

**Features:** macOS Compatibility

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RESOL DeltaSol® BS/4 | $4.99 | one-time |
| RESOL DeltaTherm® E | $4.99 | one-time |
| RESOL DeltaSol® TT | $4.99 | one-time |
| RESOL DeltaSol® BX Plus | $9.99 | one-time |
| RESOL DeltaSol® BX | $9.99 | one-time |
| RESOL DeltaTherm® PV | $9.99 | one-time |
| RESOL DeltaTherm® PV MAX | $9.99 | one-time |
| RESOL DeltaTherm® HC Plus | $9.99 | one-time |
| RESOL DeltaSol® MX | $19.99 | one-time |
| RESOL DeltaTherm® HC MAX | $19.99 | one-time |
| RESOL FWR | $19.99 | one-time |
| SolarVenti SControl | $64.99 | one-time |


### 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 VBus®Touch Trainer free?

VBus®Touch Trainer is free to download, with in-app purchases available.

### Is WindPower free?

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

### Do VBus®Touch Trainer or WindPower have ads?

Neither VBus®Touch Trainer nor WindPower shows ads.

### Which is updated more often, VBus®Touch Trainer or WindPower?

VBus®Touch Trainer ships an update every 7 months, and WindPower every 5 months. Most recently, VBus®Touch Trainer was updated on September 24, 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.*