# CENTRUM Mobile vs SieWeb

The clearest difference is update cadence: CENTRUM Mobile at every 3 months against SieWeb's every 41 months. CENTRUM Mobile also leads on iOS requirement (10.0 vs 16.6). 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.

CENTRUM Mobile ships an update every 3 months, SieWeb every 41 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CENTRUM Mobile | SieWeb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.8 (18 ratings)](https://appshunter.io/ios/app/sieweb/id1455988495/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 7.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 41 months |
| Monetization | — | Free |
| Size | 20 MB | 8 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PUCP](https://appshunter.io/developer/1062951985) | [H&O System](https://appshunter.io/developer/1013281552) |

## What reviewers say

### CENTRUM Mobile

[App page](https://appshunter.io/ios/app/centrum-mobile/id1256084763)

**Features:** macOS Compatibility

**In-app purchases:** none


### SieWeb

[App page](https://appshunter.io/ios/app/sieweb/id1455988495)

This app streamlines academic and administrative processes for preschools and schools. It offers a unified view of messages, tasks, and grades, along with communication and scheduling tools.

**Highlights:** Unified dashboard for messages, tasks, and circulars, Calendar view for tasks, Detailed grade reporting, In-app messaging, Configuration for alerts and languages

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CENTRUM Mobile free?

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

### Is SieWeb free?

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

### Do CENTRUM Mobile or SieWeb have ads?

Neither CENTRUM Mobile nor SieWeb shows ads.

### Which is updated more often, CENTRUM Mobile or SieWeb?

CENTRUM Mobile ships an update every 3 months, and SieWeb every 41 months. Most recently, CENTRUM Mobile was updated on October 9, 2026 and SieWeb on October 15, 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.*