ViGuide vs Zilmet Sizing
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ViGuide
Streamline the process of commissioning Viessmann boilers with this user-friendly mobile application. It guides trained professionals through each step, ensuring a safe, efficient, and complete installation.
- Streamlined boiler commissioning
- User-friendly mobile interface
- Step-by-step guidance
- Ensures complete and correct steps
- Efficient installation process
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ViGuide - the best way to commission a Viessmann boiler • Please note this app is intended only for trained professionals. If you are not certified to install and commission a Viessmann product, please call your local installer or contact us to help you find a Viessmann partner in your area. • It’s time for a new start We have completely streamlined boiler commissioning and moved the process to a user-friendly mobile app. In a couple of simple steps, ViGuide will safely guide you through the process of commissioning a Viessmann boiler. Even you are new to the Viessmann boiler model, the simplified app allows you to carry out the steps with ease, as efficiently as possible and in less time. The app will guide you step-by-step through the commissioning process and thus ensures that all necessary commissioning steps are carried out completely and in the correct order.
Zilmet Sizing
This program assists with sizing expansion tanks for hydronic, thermal, and water systems. It provides detailed output including required tank volume and relevant Zilmet data sheets, brochures, and installation manuals for residential and commercial applications.
- Expansion tank sizing
- Hydronic system support
- Thermal system support
- Water system support
- Residential and commercial applications
- Tank volume calculation
- Access to data sheets and manuals
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A detailed sizing program for hydronic, thermal, and water systems expansion tanks. For use in both residential and commercial product applications. Tank sizing output defines tank volume required and includes Zilmet data sheets, brochures, and installation manuals.
Screenshots
Verdict
The clearest difference is review sentiment: ViGuide at 41% against Zilmet Sizing's 0%. ViGuide also leads on ratings volume (208 vs 1). Zilmet Sizing's advantage is rating (5.0 vs 4.5) and iOS requirement (11.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Zilmet Sizing holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: ViGuide has 208 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 41% of ViGuide's written reviews are positive against 0% of Zilmet Sizing's, so the app with the better star average is not the one people write more warmly about.
| Parameter | ViGuide | Zilmet Sizing |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (208 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 40.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 208 — better | 1 |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 1.5 GB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Viessmann IT Service GmbH | Zilmet USA LLC |
Customer experience
ViGuide
Zilmet Sizing
Bugs and requests
ViGuide
Reported bugs
36 issues- Login screen flashes and exits
- Unable to connect or commission v100
- Mennekes Amtron 4you500 cannot be integrated
- BCU flash takes too long
- App not working on iPhone 16
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- Cannot log in with iPhone 16 Pro
- QR code not working on iPhone 16 Pro
- Impossible to commission devices, errors persist
- Kicked out when programming boiler
- Cannot log in
- EMS configuration not working properly
- QR function and connection fail multiple times
- Heating temperature adjusts on its own
- Cannot connect Vitocol to boiler
- Only installer can pair Viessmann
- Vitocal 250 SH cannot be commissioned via app
- App crashes
- Update function for heat pumps stopped working
- Missing parameters for pumps
- App doesn't work after update
- Cannot connect device
- App locks homeowners out
- Setup not self-explanatory
- App is a catastrophe for spare part replacement
- App freezes on Viessmann logo
- App starts only after reinstallation
- App doesn't start anymore
- Reduced functionality after update
- App doesn't start after last update
- Application bugs during commissioning
- Cannot commission boiler with Vitotrol 300
- App doesn't recognize Vitotrol 300
- App doesn't recognize Vitodens 111w
- App closes immediately on iPad mini
- Cannot commission boiler with Vitotrol 300
- System, heating circuit, hot water tiles not displayed correctly
Requested features
16 requests- Add real-time flow temperature
- Add target temperature display
- Support for landscape mode on iPad
- Include Anlage location in protocol
- Expand to entire product program
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- Add acceptance protocols
- Add troubleshooting help
- Support for Vitocal series
- Restore homeowner access to ViGuide
- Allow manual boiler pairing option
- Add warranty link
- Allow setting circulation pump timing
- Improve EMS configuration display
- Add simple diagnosis for offline systems
- Add support for Mennekes wallbox
- Add QR code location guidance
Zilmet Sizing
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ViGuide
No in-app purchases
Zilmet Sizing
No in-app purchases
