# TessWebApp vs Viessmann Access

The clearest difference is update cadence: TessWebApp at weekly against Viessmann Access's every 4 months. TessWebApp also leads on iOS requirement (10.0 vs 12). 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.

TessWebApp ships an update weekly, Viessmann Access every 4 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | TessWebApp | Viessmann Access |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 75 MB | 52 MB |
| Requires iOS | **10.0** | 12 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LUBRICATION MANAGEMENT SL](https://appshunter.io/developer/1477028459) | [Viessmann IT Service GmbH](https://appshunter.io/developer/1801739683) |

## What reviewers say

### TessWebApp

[App page](https://appshunter.io/ios/app/tesswebapp/id1477028460)

**Features:** macOS Compatibility

**In-app purchases:** none


### Viessmann Access

[App page](https://appshunter.io/ios/app/viessmann-access/id1533222623)

**In-app purchases:** none


## Frequently asked questions

### Is TessWebApp free?

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

### Is Viessmann Access free?

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

### Do TessWebApp or Viessmann Access have ads?

Neither TessWebApp nor Viessmann Access shows ads.

### Which is updated more often, TessWebApp or Viessmann Access?

TessWebApp ships an update weekly, and Viessmann Access every 4 months. Most recently, TessWebApp was updated on October 7, 2026 and Viessmann Access on October 11, 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.*