# sim.de Servicewelt vs Formal Brief

The clearest difference is ads: sim.de Servicewelt at none against Formal Brief's shown. Formal Brief's advantage is update cadence (every 2 days vs every 3 months) and iOS requirement (13.0 vs 15.0). On price, 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.

sim.de Servicewelt ships an update every 3 months, Formal Brief every 2 days. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | sim.de Servicewelt | Formal Brief |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (4 ratings)](https://appshunter.io/ios/app/simde-servicewelt/id948658474/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 36.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 5 MB | 71 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Drillisch Online GmbH](https://appshunter.io/developer/1706071080) | [Ahmed Salji](https://appshunter.io/developer/1885727596) |

## What reviewers say

### sim.de Servicewelt

[App page](https://appshunter.io/ios/app/simde-servicewelt/id948658474)

Manage your personal service world with all its benefits in one app. Control data usage, view bills, change customer data, and flexibly book tariff options. Stay logged in for automatic access without re-entering credentials.

**Highlights:** Control data usage, View bills, Change customer data, Book and manage tariff options, View tariff details, Manage multiple phone numbers, Automatic login

**Features:** Vision Pro support

**In-app purchases:** none


### Formal Brief

[App page](https://appshunter.io/ios/app/formal-brief/id6761586717)

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

**In-app purchases:** none


## Frequently asked questions

### Is sim.de Servicewelt free?

sim.de Servicewelt is free to download, with no in-app purchases.

### Is Formal Brief free?

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

### Do sim.de Servicewelt or Formal Brief have ads?

Formal Brief shows ads; sim.de Servicewelt does not.

### Which is updated more often, sim.de Servicewelt or Formal Brief?

sim.de Servicewelt ships an update every 3 months, and Formal Brief every 2 days. Most recently, sim.de Servicewelt was updated on October 24, 2026 and Formal Brief on October 9, 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.*