Hargassner vs ViParts
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Hargassner
Control your Hargassner heating system remotely with AI assistance. Monitor your system's status, adjust settings like heating circuits and water preparation, and receive instant notifications. Access more features via the web portal.
- Real-time heating system overview
- Remote adjustment of heating circuits and times
- Domestic hot water preparation settings
- AI support assistant 'Hargy'
- Push notifications for system status
- Solar system monitoring
- Temperature trend graphs
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The innovative mobile remote control with AI support for your Hargassner heating system. With Hargassnerβs new app, you can easily and quickly control your heating system, make changes, and access information anytime, from anywhere. The app is particularly user-friendly and clearly designed. Information: You get a real-time overview of your entire heating system. The operating status of the boiler, buffer and hot water tank, heating circuits, pumps, and their temperatures are displayed. Fresh water stations are also integrated, as well as a function selector for combination systems. If a solar system is installed, the app also displays its information and the heat quantity meter. Detailed views provide information about temperatures and pump status. A graph shows the progression of various temperature trends. Brand new features include the integrated AI support assistant βHargyβ and support for an existing Hargassner heat pump with optional weather service integration. Adjustment: The app allows you to easily switch heating circuits on/off or lower them, change heating times, set heating temperatures, and activate holiday mode. Itβs also possible to set key parameters for domestic hot water preparation. For the buffer storage or boiler, an additional βone-time chargeβ function is available. Notifications: The app immediately sends important information via push notification or email to your mobile device, so you always know the status of your heating system. These messages can also be sent to any number of other people. WEB VERSION: By switching to the WEB portal, you get even more extensive configuration options and additional information. This allows you to keep an eye on everything across devices β whether PC, notebook, smartphone, or tablet.
ViParts
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.
- 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
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The Viessmann ViParts app offers you as a Viessmann partner the opportunity to see all information about our spare parts and order them directly. The following functions are available in ViParts: - Identification of all spare part in exploded drawings and parts lists - Barcode scanner for reading in material numbers - Display of all maintenance parts for the products - Compatibility check between product and spare part - Ordering of spare parts - Availability of all technical documents - Display of availability and prices (with login)
Screenshots
Verdict
The clearest difference is review sentiment: Hargassner at 50% against ViParts's 14%. ViParts's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Hargassner ships an update every 2 months, ViParts every 3 weeks. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.
| Parameter | Hargassner | ViParts |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews β better | 14.3% of reviews |
| Update frequency | Every 2 months | Every 3 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details β not scored | ||
| Size | 58 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Hargassner Ges.m.b.H. | Viessmann IT Service GmbH |
Customer experience
Hargassner
ViParts
In-app purchases
Hargassner
No in-app purchases
ViParts
No in-app purchases









