# Calpak VBus®Touch vs OPTIMISER POWER

The clearest difference is iOS requirement: Calpak VBus®Touch at 9.0 against OPTIMISER POWER's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 4, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Calpak VBus®Touch | OPTIMISER POWER |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | — |
| Size | 48 MB | 39 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [RESOL GmbH](https://appshunter.io/developer/369420321) | [Khalid BEY](https://appshunter.io/developer/1705837593) |

## What reviewers say

### Calpak VBus®Touch

[App page](https://appshunter.io/ios/app/calpak-vbustouch/id1437870061)

Visualize your solar energy production with detailed charts and diagrams. Monitor heat gained and temperature progression to understand your system's performance. Requires a compatible controller and internet connection.

**Highlights:** Solar yield visualization, Hydraulic scheme display, Temperature progression chart, Modular add-ons for extended features, Real-time performance monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


### OPTIMISER POWER

[App page](https://appshunter.io/ios/app/optimiser-power/id6464369636)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Calpak VBus®Touch free?

Calpak VBus®Touch is free to download, with no in-app purchases.

### Is OPTIMISER POWER free?

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

### Do Calpak VBus®Touch or OPTIMISER POWER have ads?

Neither Calpak VBus®Touch nor OPTIMISER POWER shows ads.

### Which is updated more often, Calpak VBus®Touch or OPTIMISER POWER?

Calpak VBus®Touch ships an update fortnightly, and OPTIMISER POWER fortnightly. Most recently, Calpak VBus®Touch was updated on October 4, 2026 and OPTIMISER POWER on October 3, 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.*