# ViGuide vs Zilmet Sizing

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.

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.

## The numbers

| Metric | ViGuide | Zilmet Sizing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (208 ratings)](https://appshunter.io/ios/app/viguide/id1421720639/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zilmet-sizing/id1552934924/reviews)** |
| Number of ratings | **208** | 1 |
| Positive reviews | **40.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Monetization | Free | Free |
| Size | 1.5 GB | 2 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Viessmann IT Service GmbH](https://appshunter.io/developer/1801739683) | [Zilmet USA LLC](https://appshunter.io/developer/1552934926) |

## What reviewers say

### ViGuide

[App page](https://appshunter.io/ios/app/viguide/id1421720639)

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.

**Highlights:** Streamlined boiler commissioning, User-friendly mobile interface, Step-by-step guidance, Ensures complete and correct steps, Efficient installation process

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great for service and support
- 🚀 Makes commissioning easy
- 👍 Excellent work and monitoring tool
- 👍 Top app for installers
- 👍 User-friendly interface

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Login issues
- 🐛 Unable to connect or commission
- 🐛 App is slow
- 🐛 Updates cause problems

**Reported bugs**

- 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

**Requested features**

- 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


### Zilmet Sizing

[App page](https://appshunter.io/ios/app/zilmet-sizing/id1552934924)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ViGuide free?

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

### Is Zilmet Sizing free?

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

### Which has better reviews, ViGuide or Zilmet Sizing?

Zilmet Sizing is rated higher. ViGuide averages 4.5 out of 5 from 208 ratings, while Zilmet Sizing averages 5.0 from 1 ratings.

### Do ViGuide or Zilmet Sizing have ads?

Neither ViGuide nor Zilmet Sizing shows ads.

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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.*