# VBusTouch free vs OPTIMISER POWER

The clearest difference is update cadence: OPTIMISER POWER at fortnightly against VBusTouch free's every 24 months. VBusTouch free's advantage is iOS requirement (7.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

VBusTouch free ships an update every 24 months, OPTIMISER POWER fortnightly. The most recent releases landed on October 31, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | VBusTouch free | OPTIMISER POWER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/vbustouch-free/id325152686/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 4 MB | 39 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, 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

### VBusTouch free

[App page](https://appshunter.io/ios/app/vbustouch-free/id325152686)

Monitor and visualize solar system data and progression charts from anywhere in the world. Requires a RESOL controller with a VBus interface and a datalogger connected to the internet.

**Highlights:** Live data display, Progression charts, Hydraulic scheme view, Landscape orientation chart display, Portrait orientation data display

**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 VBusTouch free free?

VBusTouch free 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 VBusTouch free or OPTIMISER POWER have ads?

Neither VBusTouch free nor OPTIMISER POWER shows ads.

### Which is updated more often, VBusTouch free or OPTIMISER POWER?

VBusTouch free ships an update every 24 months, and OPTIMISER POWER fortnightly. Most recently, VBusTouch free was updated on October 31, 2026 and OPTIMISER POWER on November 7, 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.*