# Sauerstoffrechner vs Status 4

The clearest difference is update cadence: Status 4 at weekly against Sauerstoffrechner's every 25 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.

Sauerstoffrechner ships an update every 25 months, Status 4 weekly. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Sauerstoffrechner | Status 4 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Weekly** |
| Monetization | — | Free |
| Size | 1 MB | 117 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Beate Boehme](https://appshunter.io/developer/595186948) | [Leon Herget](https://appshunter.io/developer/6772346974) |

## What reviewers say

### Sauerstoffrechner

[App page](https://appshunter.io/ios/app/sauerstoffrechner/id625770232)

**Features:** Vision Pro support

**In-app purchases:** none


### Status 4

[App page](https://appshunter.io/ios/app/status-4/id6772346972)

This app provides essential medical knowledge and tools for emergency medical personnel. It offers offline access to medication information, algorithms, scores, and calculators, aiding in both on-the-job reference and training.

**Highlights:** Offline medication database, Emergency algorithms and protocols, Triage and scoring tools, Medical calculators, Sonography trainer, Multilingual anamnesis questions, Shift logging and reporting

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sauerstoffrechner free?

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

### Is Status 4 free?

Status 4 is free to download, with no in-app purchases.

### Do Sauerstoffrechner or Status 4 have ads?

Neither Sauerstoffrechner nor Status 4 shows ads.

### Which is updated more often, Sauerstoffrechner or Status 4?

Sauerstoffrechner ships an update every 25 months, and Status 4 weekly. Most recently, Sauerstoffrechner was updated on September 29, 2026 and Status 4 on October 4, 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.*