# x vs ViParts

The clearest difference is review sentiment: x at 56% against ViParts's 14%. 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.

x ships an update monthly, ViParts every 3 weeks. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | x | ViParts |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **56.3% of reviews** | 14.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 282 MB | 33 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kermi GmbH](https://appshunter.io/developer/879996391) | [Viessmann IT Service GmbH](https://appshunter.io/developer/1801739683) |

## What reviewers say

### x

[App page](https://appshunter.io/ios/app/x-center/id1531279688)

Control your heat pump system remotely with this app. Monitor performance, create custom scenes, and view statistics from anywhere. No extra hardware is needed to get started.

**Highlights:** Remote heat pump control, Comprehensive system monitoring, Customizable scenes, Statistics and overviews, Alarm and warning notifications, Dark and light mode

**Features:** Vision Pro support

**In-app purchases:** none


### ViParts

[App page](https://appshunter.io/ios/app/viparts/id6477911742)

Access comprehensive information on spare parts and place orders directly. Identify parts using exploded drawings, barcode scanning, and compatibility checks. View technical documents and check availability and pricing.

**Highlights:** Spare part identification via exploded drawings, Barcode scanner for material numbers, Maintenance parts display, Product and spare part compatibility check, Direct spare part ordering, Access to technical documents, Availability and price display

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is x free?

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

### Is ViParts free?

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

### Do x or ViParts have ads?

Neither x nor ViParts shows ads.

### Which is updated more often, x or ViParts?

x ships an update monthly, and ViParts every 3 weeks. Most recently, x was updated on November 3, 2026 and ViParts on November 8, 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.*