# Si vs Westerbergen App

The clearest difference is update cadence: Si at monthly against Westerbergen App's every 6 months. 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.

Si ships an update monthly, Westerbergen App every 6 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Si | Westerbergen App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Size | 49 MB | 5 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WeMa Mobile B.V.](https://appshunter.io/developer/494886354) | [EveryOffice B.V.](https://appshunter.io/developer/1103939673) |

## What reviewers say

### Si

[App page](https://appshunter.io/ios/app/si-es-an/id1616635877)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Westerbergen App

[App page](https://appshunter.io/ios/app/westerbergen-app/id6448745084)

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Si free?

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

### Is Westerbergen App free?

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

### Do Si or Westerbergen App have ads?

Neither Si nor Westerbergen App shows ads.

### Which is updated more often, Si or Westerbergen App?

Si ships an update monthly, and Westerbergen App every 6 months. Most recently, Si was updated on October 7, 2026 and Westerbergen App on October 25, 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.*